An adult great white is a big shark really big. It has been responsible for more shark bites and human deaths than any other species, according to the International Shark Attack File. This is probably because it sees us as aberrant marine mammals flailing about in the water and certainly worth an exploratory bite but a gentle mouthing from a two-tonne white shark, its jaws filled with row upon row of razor-sharp teeth, could result in a severe mauling for any victim unlucky enough to have attracted its attention.Though its danger was well known to ancient mariners, it was not until the mid-1970s that it came to occupy its current place in the popular imagination, when Jaws was unleashed on an unsuspecting public. The great white sharks reputation hit rock bottom in the wake of the Spielberg classic. But during the fifty years since the films first release, public interest in the species has sparked a renaissance in research, producing remarkable new insights into the life of this extraordinary animal.Telling the story of the great white shark from the perspectives of history, psychology and biology, White Shark is nothing less than the biography of the worlds most fascinating fish.

Livebearers focuses on four families of fish which contain many of the most attractive and popular species in the tropical fish hobby today, including guppies, mollies, swordtails, and platies. The families include Goodeidae (Mexican livebearers), Anablepidae (four-eyes and others), Poeciliidae (guppies and others); and Hemirhamphidae (halfbeaks). Author David Alderton explains that hobbyists have applied the term livebearer to these four families for convenience even though there are fourteen families in the wild that reproduce by bearing live young. The chapter "Where in the World?" focuses on the natural history of these families, their distribution, and lifestyles. Hobbyists looking to begin an aquarium of livebearers or to expand their existing communities will find useful information in the chapter called "The Different Groups," in which Alderton discusses age considerations, health matters, and sex. The chapter also describes the four families and the most common genus/species of each. Included are sixteen representatives of the Family Goodeidae (e.g., Allodontichth, Characodon, and Skiffia), three genus of the Family Anablepidae (Anableps, Jenynsia, and Oxyzgonectes), twenty-six representatives of the Family Poeciliidae (e.g., Belonesox, Fiexipenis, and Limia); and three genus of the Family Hemirhamphidae (Dermogenys, Hemirhamphodon, and Namorhamphus).This colorful, user-friendly guide offers basic information on the anatomical characteristics, housing options, required aquarium equipment for livebearers as well as their feeding habits and food requirements (greenstuff, carotene-rich foods, live foods, meat, etc.). The breeding habits of livebearers have ensured their popularity with hobbyists, and the chapter on reproduction describes the various breeding habits of livebearers and outlines successful breeding strategies for interested hobbyists. In the chapter on health care, the author offers solid advice about caring for livebearers to maximize their lifespan in captivity, which is typically only a few years. He also gives information on signs of illness and some basic diseases that can be treated by the fish keeper.The final chapter offers photographs and distribution maps for sixteen popular livebearers of all four families, including information on size, physical description, natural habitat and behavior, and required aquarium conditions. The authors livebearer hit parade includes the butterfly goodeid, rainbow goodeid, black-finned goodea, four-eyed fish, guppy (millions fish), black molly, sailfin molly, swordtail, platy (moonfish), mosquito fish (dwarf and large), humpbacked (black-barred) limia, black-bellied limia, pike livebearer (piketop minnow), knife (Alfaros) livebearer, and wrestling halfbeak. Resources, glossary, and index included.

En el momento actual, el desarrollo de las pesquerías, tanto a nivel mundial como regional, demanda la elaboración de documentos que permitan un mejor conocimiento de las especies, así como aspectos de su biologia y ecologia. Este libro se centra en las especies de tiburones, rayas, mantas, peces sierra, lampreas, quimeras y mixinidos de la costa atlantica de la Peninsula Iberica y Canarias. Esta destinado a investigadores, docentes, estudiantes, profesionales dela pesca, pescadores deportivos y a cualquier persona interesada en el medio marino. El libro inicia con un capitulo sobre el origen y evolucion de los peces, y una descripcion de los elementos anatomicos mas significativos de las clases cephalaspido morphi (lampreas), myxini (mixinidos), holocephali (quimeras)y elasmo branchii (tiburones y peces batoideos). Con el fin de presentar un texto didactico y de manejo facil, se ha optado por una organizacion de los contenidos de forma anidada; desde los niveles taxonomicos mas generales de ordeny familia, a los de genero y especie. Para facilitar el proceso de identificacion, hay fotografias de todas las especies donde se señalan los parametros diferen- ciadores de cada una de ellas, ademas de nombres comunes en diferentesidiomas, area de distribucion geografica (mapa), diagnosis, habitat, tamaño, reproduccion, alimentacion, importancia (social y pesquera) y si puede ser peligrosa para el hombre. Por ultimo, se incluyen todos los sinonimos de los nombres de las especies, nombres comunes, nombres cientificos y un glosario de losterminos cientificos utilizados a lo largo del libro, que tiene el objetivo demejorar la comprension de aquellos lectores menos familiarizados con el lenguaje cientifico. aaaINDICE RESUMIDO. Aspectos generales. Identificacion de familias. Identificacion de generos y especies. Nombre comunes. Nombres cientificos

Os Mistérios das Profundezas dos Oceanos , embarcamos em uma jornada épica para explorar os segredos mais bem guardados do mundo subaquático. Desde as vastas e sombrias zonas abissais até os vibrantes ecossistemas das fendas hidrotermais, cada capitulo desvenda um aspecto unico e intrigante dos oceanos profundos.

Descubra os segredos das profundezas marinhas neste fascinante livro que explora as majestosas florestas marítimas e seus habitantes mais impressionantes: tubarões, baleias e peixes-boi. Gigantes do

This illustrated guide describes the many ways that coarse fish species depend upon the diversity of habitats in river systems and considers how this dependence changes throughout the stages of their lives - from spawning and eggs, through to the juvenile and adult stages- and with changing seasons and river conditions. This knowledge is important if we are to understand the many population bottlenecks and the variety of coarse fish species that have resulted from historic changes to our rivers. It is also important if we are to manage rivers positively to protect and improve the vitality of coarse fisheries - a process that will also benefit the wider wildlife community with which coarse fish are interdependent.

Un fascinante recorrido visual por la vida de los tiburones. No existen dos especies de tiburones con la misma historia de vida; sin embargo, estas magníficas criaturas tienen muchas cosas en común. Esta singular biografia reune un gran numero de especies que viven en diferentes habitats de todo el mundo. Examina la biologia, la ecologia y el comportamiento de los tiburones, asi como su papel cultural en la historia de la humanidad. Redactado por dos experimentados educadores, cientificos y conservacionistas de tiburones, combina atractivos perfiles de especies seleccionadas con cautivadoras ilustraciones para ofrecer una exploracion inigualable de la vida y fases vitales de los tiburones. Presenta una hermosa e instructiva coleccion de acuarelas de las especies, su anatomia y ambientes en los que viven; ademas, narra la biografia del tiburon utilizando las historias de vida de especies representativas, desde el nacimiento y los primeros años de vida familiar hasta la adolescencia y la edad adulta. Asimismo, analiza tiburones de todo tipo, como el marrajo comun, la pintarroja, el tiburon trozo, la mielga, el tiburon blanco, el tigre, el peregrino, el angel y el martillo.Un compendio que trata la historia evolutiva de los tiburones, sus caracteristicas distintivas, sus habitats, su reproduccion y su migracion, y ademas examina el papel de los tiburones en el arte, la musica, la literatura, la espiritualidad y la mitologia. Una referencia esencial para los amantes de los tiburones.

El pulpo es probablemente el invertebrado más inteligente, y se encuentra entre las especies más inteligentes del planeta. De hecho, su capacidad mental es similar a la de los perros. Este libro detalla la notable historia natural de este animal y su relacion polifacetica con los seres humanos. Describe las particularidades de su inteligencia, sus mecanismos de defensa y su corta vida vinculada a la reproduccion, asi como el papel que desempeña en el consumo humano y la industria pesquera mundial. Una fascinante mirada sobre la extraordinaria vida de esta asombrosa criatura y de su mundo submarino. Nuestra relacion con los pulpos se remonta a la prehistoria. Nos asombran sus habilidades escapistas, sus sofisticados sistemas de camuflaje y defensa, y hoy en dia es utilizado como alimento en numerosos platos de la gastronomia de todo el mundo. Otras culturas perciben al pulpo como totem erotico o como simbolo de los males mas oscuros, e incluso como mascota.Schweid presenta una abundante informacion de los pulpos con un estilo claro y conciso [] El libro es una guia amena sobre una de las creaciones mas peculiares de la naturaleza. Chapter 16

About seventy-one per cent of the Earths surface is water, and even on dry land we remain closely connected to aquatic life. It provides us with oxygen, food, medicine and materials. Wild waterlife infiltrates our lives in many surprising ways. Every other breath we take is filled with oxygen provided by ocean-dwelling microscopic plants. A type of seaweed provides a means to directly test whether people are infected with viruses, including Covid-19. Robotics design takes inspiration from a pikes ability to accelerate with greater g-force than a Porsche.Wild Waters by Susanne Masters is a celebration of the breadth of wildlife that can be found in and around our varied waterways, from oceans and rivers to rock pools and ponds. Armchair explorers can read a fascinating account of how aquatic plants and animals enrich human life. Swimmers, paddleboarders, dog walkers, families and anyone with a passion for the great outdoors can learn about local wildlife, including when and where to look for different species without causing any harm.With stunning illustrations by Alice Goodridge, Wild Waters provides a tantalising insight into the world beneath the surface.

Author Ray Hunziker, longtime editor of Tropical Fish Hobbyist magazine and lifelong fish keeper, is the ideal tutor for aquarists looking to take a dive into the saltwater end of the tank! Marine Aquariums begins with a discussion of seawater and water quality, the most critical part of keeping marine fishes happily swimming (and breathing) in their tank. Hunziker continues with a step-by-step explanation of setting up a marine aquarium, discussing aquarium types, the number of fishes for the size tank selected, siting the tank, stands, substrates, temperature, lighting, filtration and decor.The chapter on stocking and maintaining the tank discussing purchasing healthy, vibrant fish, acclimatizing them to the tank, feeding them, and monitoring the tank on a regular basis. An elaborate chapter on the various types of saltwater fishes available, "Ideal Fish for Your Marine Aquarium, "details and illustrates nearly 70 fishes divided into the following categories: moray eels, squirrelfish and soldierfish, lion fish, groupers, cardinalfish, butterflyfish, angelfish, damselfish, hawkfish, wrasses, jawfish, gobies, surgeonfish, and triggerfish. The final chapter discusses keeping fish healthy, including the signs of illness, treating various ailments, and setting up a quarantine tank for affected fish. Resources, glossary, index included.

Sumérjase bajo las olas para conocer a 80 de los habitantes más extraños y sorprendentes del océano. En este recorrido por el mundo acuático, bellamente ilustrado, se narran las fascinantes historias de deslumbrantes criaturas marinas y sus ingeniosas hazañas de supervivencia (desde producir anticongelante hasta soportar temperaturas elevadisimas). Una pertinente y magnifica celebracion de nuestro mundo acuatico y de las maravillosas especies que lo habitan. Ademas, se revelan las formas en que los seres marinos aparentemente remotos han dado forma a nuestras propias vidas, tanto a traves de la medicina como de la cultura y el folclore. Conocera a los narvales de los mares polares, cuyos colmillos se comercializaron como cuernos de unicornio durante la Edad Media; a las medusas de cristal del Pacifico, que revolucionaron el estudio cientifico de los genes, las celulas y las enfermedades, y a los peces globo del Caribe, que generan un veneno mas letal que el cianuro.Cada vez resulta mas evidente que la vida en la Tierra depende de la salud de los oceanos, por lo que nunca habia sido tan importante apreciar y celebrar a sus maravillosos habitantes y comprender como podemos ayudarles a prosperar.

A New Scientist Gift Pick 2017From luminous squid to invisible plankton, from sandy shorelines to the bone-crushing pressure of the deep, marine conservationist Tom "The Blowfish" Hird takes us on an incredible journey revealing what lurks beneath the waves. A treasure chest of fascinating facts, full-colour photos and vintage line drawings, Blowfishs Oceanopedia is a stunningly beautiful guide to all we know about our oceans and the weird and wonderful creatures that inhabit them.

Salmón chileno: Responsabilidad compartida ofrece una mirada reveladoraa la acuicultura del salmón en Chile, una industria en la encrucijada de laética empresarial y la sostenibilidad ambiental. A traves de una narrativa envolvente,Teodoro Wigodski S., destacado academico y director de empresas,expone las complejidades y desafios de esta prominente industria, crucialpara la economia nacional y el bienestar global.Desde su experiencia en la presidencia de la Empresa Portuaria Puerto Montthasta enfrentar la crisis del virus ISA, Wigodski analiza profundamente losconflictos con comunidades locales y organizaciones ambientalistas, y destacalas oportunidades para un desarrollo que respete los valores economicos,sociales y ambientales.Este libro es el resultado de una investigacion rigurosa, incluyendo visitas yentrevistas en Chile y Noruega. Este viaje, tanto intelectual como fisico, nosolo revela los retos internos de la industria, sino que tambien funciona comoun llamado a la accion para promover practicas sostenibles.Destinado a convertirse en un recurso esencial en el debate sobre el futuro dela acuicultura, el libro sirve como una herramienta educativa para estudiantesy profesionales de diversas disciplinas. Mas que un mero compendio dedatos, la obra invita a un dialogo sobre la responsabilidad compartida en eldesarrollo sostenible de la industria del salmon.Descubra la compleja relacion entre la etica empresarial, la sostenibilidadambiental y el desarrollo economico. Esta lectura es imprescindible paraquienes estan comprometidos con la construccion de un futuro donde la armoniaentre industria y naturaleza prevalezca.

Where the land meets the sea, life clings to the margins in a world of relentless change. The intertidal zone is a place of extremes - where creatures endure crashing waves, scorching sun, and the constant ebb and flow of the tides. It is a place of resilience and adaptation and home to some of the most extraordinary organisms on the planet.Blending marine biology, oceanography and evolutionary science, marine biologist Ruth Searle takes us on a journey through the deep history of the intertidal zone - from its ancient origins as the possible cradle of life to the remarkable adaptations of the species that inhabit it today. Exploring the geological forces that shape coastlines, the mechanics of tides and waves, and the evolutionary arms race that has unfolded on the shore, this book reveals how the intertidal zone has not only survived mass extinctions but has driven some of natures most extraordinary innovations.The Intertidal Zone: Life on the Edge is a celebration of one of Earths most dynamic ecosystems - its beauty, its mysteries, and its fragility. As climate change and human activity reshape coastlines across the planet, understanding this environment has never been more urgent.

La historia evolutiva de los tiburones es, probablemente, una de las más fascinantes y antiguas entre los grandes depredadores, con más de 450 millones de años de evolución. Son animales extraordinarios con una gran capacidad de adaptacion que les ha permitido sobrevivir a varias extinciones masivas. Sin embargo, viven rodeados de leyendas y mitos que en muchas ocasiones los convierten en animales peligrosos y violentos. Este libro pretende mostrar que son los tiburones, por que los estudiamos y su verdadera importancia. Tambien explica los distintos tipos que existen, de que se alimentan, cual es su funcion ecologica en los ecosistemas marinos, que especies podemos encontrar en nuestras costas y si son tan peligrosos como los pintan. Ademas, habla de su representacion en el arte, el cine o la literatura. En definitiva, se trata de un compendio de informacion para conocer y acercarnos a uno de los grupos de animales marinos mas maravillosos y menos comprendidos del planeta.

Panspermia e una teoria che sostiene che la Vita e arrivata sul nostro pianeta dallo spazio, durante il Bombardamento Pesante Tardivo , quando forme di Vita primordiali trasportate da corpi celesti sarebbero cadute sulla Terra. È stato dimostrato che i batteri possono resistere ai rigori dell ingresso nell atmosfera. Da li, quei batteri si sono adattati all ambiente e ai suoi continui cambiamenti, iniziando un lungo percorso evolutivo. Siamo solo creature forgiate dai capricci del clima e le esigenze dell ambiente . I primi 670 milioni di anni li abbiamo chiamati: ERA ARCHEOZOICA. Essendo la fase meno conosciuta della Storia, il suo studio non e stato diviso in Periodi. 4.565.000.000 - La collisione delle particelle di roccia e la loro elevata radioattivita origina piu calore, il pianeta si trasforma in un immensa palla di lava incandescente. Frammenti di ferro e altri metalli fusi sono concentrati nel suo centro, formando il nucleo. Rocce e minerali piu leggeri galleggiano sopra il nucleo, in uno strato intermedio chiamato mantello, che e parzialmente pastoso. In questo periodo il mantello e privo di metallo. 4.550.000.000 - Il pianeta ha cominciato a perdere calore nello spazio e la sua superficie si e lentamente raffreddata, formando la prima crosta e litosfera della Terra. I primi vulcani si formano per espellere i gas e il vapore acqueo che si accumulano sotto la crosta, dando origine all atmosfera primitiva. Il magma si solidifica...

Um ebook para quem aprecia e ama o Bacalhau. Você encontrará 12 receitas entre tradicionais e contemporâneas feitas com o bacalhau. Bacalhau à Gomes de Sá, Bacalhau à Brás, Salada de Bacalhau e Bacal

From the Blue Hole at Lawson Reef and the wreck of the Umbria in the Red Sea, to Michaelmas on the Great Barrier Reef, the Dive Atlas of the World offers a global tour of top dive sites, described and photographed by experts. From well-known classics to sites that have only recently been discovered, this global selection offers the discerning diver a feast of locations to choose from, including an expanded selection of Caribbean dive sites. Whether you favor muck diving and macro photography, wrecks, walls, reefs, caves, blue holes or the adrenaline rush of high-speed drift dive in a strong current (or all of these), you will find well-written, clearly mapped accounts of the top places where you can enjoy these dives. This book features contributions from local experts, leading writers and award-winning photographers such as Jack Jackson and Lawson Wood.

The fresh waters of the British Isles are diverse, ranging from torrential hill streams to powerful rivers and wide, meandering lowland channels. Canals and drainage channels, ranging in size from ditches to the large Fenland drains of eastern England also hold fish, as do reservoirs, lakes, ponds and other still water bodies. The fish themselves are correspondingly varied. This pocket-sized book provides information about the 54 native, invasive and naturalised species found in the UK today, and includes a photograph of each to allow easy identification

Cichlids are popular fish for home aquariums because of their fantastic variety of colors, shapes, and sizes. This book covers the various species in detail while providing basic care, maintenance, and breeding instructions. More than 140 color photographs and easy-to-use language make this book helpful for the beginner and the aquarium enthusiast alike.