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A very large tuna eats all the red fish who are swimming around, leaving the little Swimmy all alone. Scared and on his own, the little black fish swims away into the large ocean. He sees many beautiful and strange creatures on his journey until he finally discovers another school of little red fish, just like his own family used to be.
Marine life, sea life or ocean life is the collective ecological communities that encompass all aquatic animals, plants, algae, fungi, protists, single-celled microorganisms and associated viruses living in the saline water of marine habitats, either the sea water of marginal seas and oceans, or the brackish water of coastal wetlands, lagoons ...
A remarkable diversity of fish spend their early life at the ocean's surface. This list includes many well-known, ecologically, and economically important species from a variety of habitats. Pelagic fish species include some anchovy, mahi-mahi, marlins, swordfish, amberjack and Atlantic mackerel.
The surface is utilised by a wide range of species, from various fish and cetaceans, to species that ride on ocean debris (termed rafters). [34] [35] [36] Most prominently, the surface is home to a unique community of free-living organisms, termed neuston (from the Greek word, υεω
Pelagic zones. The ocean can be conceptualized as being divided into various zones, depending on depth, and presence or absence of sunlight.Nearly all life forms in the ocean depend on the photosynthetic activities of phytoplankton and other marine plants to convert carbon dioxide into organic carbon, which is the basic building block of organic matter.
That there are to be found in the sea the forms, not only of terrestrial animals, but of inanimate objects even, is easily to be understood by all who will take the trouble to examine the grape-fish, the sword-fish, the sawfish, and the cucumber-fish, which last so strongly resembles the real cucumber both in colour and in smell. [8]
Only 13 per cent of all fish species live in the open ocean, off the shelf. Of these, 1 per cent are epipelagic, 5 per cent are pelagic, and 7 per cent are deep water. [16] Fish are found in nearly all natural aquatic environments. [23] Most fish, whether by species count or abundance, live in warmer environments with relatively stable ...
Fish fall into two main groups: fish with bony internal skeletons and fish with cartilaginous internal skeletons. Fish anatomy and physiology generally includes a two-chambered heart, eyes adapted to seeing underwater, and a skin protected by scales and mucous. They typically breathe by extracting oxygen from water through gills.
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