What do deep sea vent fish eat?
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smaller life forms that thrive on hydrothermal vents
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Most fishes do have a 'tongue'. Fish tongues however do not resemble the muscular tongues of humans. The tongue of a fish is formed from a fold in the floor of the mouth. The tongue of the lamprey can be protruded from the mouth. It has horny teeth and is used to rasp flesh from its prey. Most fishes however cannot protrude their tongues. \n\nThe tongue and inside walls of the mouth of the Cottonmouth Trevally, Uraspis secunda, are brilliant white. \n\nSeveral species of parasitic crustaceans (isopods of the genus Ceratothoa) are known as tongue biters. These parasites are sometimes seen on the floor of a fish's mouth 'replacing' the tongue. Current evidence suggests that the tongue is pierced at the base by the pereopods (walking legs) of the isopod, resulting in it eventually being physically detached, or atrophying and then dropping off. \n\nSome species of tongue biters feed on the host's blood and many others feed on fish mucous. Tongue biters do not eat scraps of the fish's food. Most evidence indicates that these isopods do not kill the host.
105354
the first response is mostly correct, fish have air bladders and most benthic fish (bottom dwelling) rarely leave the tremendous depths that they live in.  think about a whale which breathes air as we do, they can dive to well beyond the crushing depths of submarines, yet they have no problems with going up and down the water column all the time. they physics behind this are simply, they are adapted to their environment, whcih is the case of whales is both the surface and the lower levels of the ocean. \n\nwhales are a fascinating case, they are able to collect the dangerous by-products of deep diving in their bodies, either through air bladders and special ability to remove toxic gasses from their blood, but they are essentially mammals like humans; obviously you know they breathe the same air we do.  interesting question.  please read more about the ocean if you are interested click the link
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Stingrays eat all kinds of benthonic animals, including fishes, mollusks (they have hard plate-like teeth that are good for crushing), sea worms, etc. \nIn captivity I've seen them eat both live animals and pieces of fish and shrimp; it's probable that they will take a while to learn to eat non-living food. \nOf course it's better to supply them with as varied a diet as possible. See the link for useful information.
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Moles are carnivores - they mostly eat worms and almost anything else that falls into their tunnels. Their tunnels are like traps for centipedes, millipedes, beetles, insect larvae, etc.\nMoles don't often feed on the surface. They have been observed eating small vertebrates such as lizards.
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They've only caught dead giant squids. Recently, a team of Japanese scientists filmed one, but it wasn't eating.\n\nSquids generally are carnivores. They will eat fish, sharks, etc. I suspect a giant squid eats the same, just lots more...
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It's impossible to answer. Some fish are predators, some live entirely on fruit and nuts, some fish live on mud, some live on plankton, some on microscopic algae.\n\nSome fish eat only jellyfish, or just a single species of algae and won't touch anything else. Other fis will eat anything that moves to slow whether it's a baby crocodile, a dead elephant, a lettuce leaf, slime scraped off the rocks or just a pile of mud.\n\nTo discuss the nutritional requirements of fish in even the most basic detail would take several years and result in a several books.\n\nYou will need to narrow down what fish species you are asking about to get any sensible answers.
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Krill Animal Printouts\nLabel Me! Printouts  \n\n Krill (euphausiids) are small, shrimp-like crustaceans that swim in the seas. These pink, translucent animals congregate in large, dense masses called "swarms" or "clouds," that turn areas of the ocean's surface pink. Krill are very important in the food web since many animals eat them. \nThere are about 85 species of krill, ranging in size from under 0.5 inch (1 cm) up to 5.5 inches (14 cm) long. The dominant krill in the southern polar oceans is the Antarctic krill (Euphausia superba), which is up to 2.3 inches (6 cm) long and weighs about 0.035 ounces (1 g). Antarctic krill have a life span of about 5 to 10 years. Antarctic Krill is considered to be a keystone species, an organism upon which very many Antarctic predators depend. \n\nDiet: Krill eat phytoplankton, single-celled plants that float in the seas near the surface. Some tropical krill also eat zooplankton. Krill spend their days in the dark depths of the ocean (about 320 feet = 100 m deep), safe from their major predators (like baleen whales and sea birds). They swim to the surface each night to eat phytoplankton. They can fast (go without eating) for up to 200 days, shrinking during this time. \n\nAnatomy: Krill have a hard exoskeleton, many legs (used for swimming and gathering food), and a segmented body. Females produce almost 1,000 eggs each summer; the eggs are laid at the surface, but fall to great depths. The hatchlings swim back to the surface to feed. Like all crustaceans, krill molt their exoskeleton as they grow. \n\nFood Web: Phytoplankton is eaten by krill (and many other organisms). Krill are eaten by many organisms, including fish, squid, sea birds, and mammals (like baleen whales and some seals). \n\nClassification: Kingdom Animalia (animals), Phylum Arthropoda, Subphylum Crustacea, Class Malacostraca, Order Euphausiacea.
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Good question!\n\nOne of the coolest adaptations that deep sea organisms have is called bioluminescence.  This allows the organisms to actually produce their own light!  Many of these organisms use the light to attract mates.  Predatorial fish take advatange of this fact, and can lure in unsuspecting prey by simply producing light (in other words, they pretend to be a potential mate).\n\nThe depths of the ocean can be extremely cold, and food can be quite hard to find.  So these organisms have a tendency to gravitate towards sources of food (such as decaying matter) and sources of heat (watervents).  By simply 'coming together' to look for food and heat, they make it much easier to find a potential mate.
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Harbor Seals have the ability to modify their hunting strategies and diet in such cases. A diversified diet is key to their survival. In some cases it can go down to the sea floor and dig up eels and octopi, or if necessary just dine on the smaller available fish locked in the low tide.\n\nAlso it's an air breather and can hold its breath a very long time. It can haul itself out onto the beach without any harm which is a feature other aquatic denizens don't have. This advantage limits any negative repercussion to low oxygen levels in the water.
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# Anoxic autotrophs: Obtain hydrogen from chemicals such as sulfur.\n[[[[[[[[[[[[[[[[[[[[[[[[[[[[[[[[[[Dead Zones are areas where the bottom water (the water at the sea floor) is anoxic, meaning that it has very low (or completely zero) concentrations of dissolved oxygen.]]]]]]]]]]]]]]]]]]]]]]]]]\nDead Zones are areas where the bottom water (the water at the sea floor) is anoxic, meaning that it has very low (or completely zero) concentrations of dissolved oxygen. These dead zones are occurring in many areas along the coasts of major continents, and they are spreading over larger areas of the sea floor. Because very few organisms can tolerate the lack of oxygen in these areas, they can destroy the habitat in which numerous organisms make their home.\n\nThe cause of anoxic bottom waters is fairly simple: the organic matter produced by phytoplankton at the surface of the ocean (in the euphotic zone) sinks to the bottom (the benthic zone) where it is subject to breakdown by the action of bacteria, a process known as bacterial respiration. The problem is, while phytoplankton use carbon dioxide and produce oxygen during photosynthesis, bacteria use oxygen and give off carbon dioxide during respiration. The oxygen used by bacteria is the oxygen dissolved in the water, and that’s the same oxygen that all of the other oxygen-respiring animals on the bottom (crabs, clams, shrimp, and a host of mud-loving creatures) and swimming in the water (zooplankton, fish) require for life to continue.\n\nThe "creeping dead zones" are areas in the ocean where it appears that phytoplankton productivity has been enhanced, or natural water flow has been restricted, leading to increasing bottom water anoxia. If phytoplankton productivity is enhanced, more organic matter is produced, more organic matter sinks to the bottom and is respired by bacteria, and thus more oxygen is consumed. If water flow is restricted, the natural refreshing flow of "oxic" waters (water with normal dissolved oxygen concentrations) is reduced, so that the remaining oxygen is depleted faster.\n\nMany of the areas where increasing bottom water anoxia has recently been observed are near the mouths of major river systems. While Satellite images can’t see the bottom of the ocean, they can see the surface, where sediments from rivers mix with ocean waters. The images shown here are Satellite images (SeaWiFS) observations of the Mississippi River delta, the Yangtze River mouth in China (The Yangtze River mouth is not currently identified as an area with an associated dead zone, but such conditions could develop there in the future), and the Pearl River mouth in China, near Hong Kong.\n\nSeaWiFS can also observe areas where water flow is restricted, such as the Baltic Sea in Europe. The image on the left features Denmark after strong storms caused flooding and increased sediment suspension in the Baltic. On the right is an overview of the Baltic Sea, including a plankton bloom in the Skagerrak just north of Denmark.\n\nThe apparent cause of the creeping dead zones is agriculture, specifically fertilizer. While fertilizer is necessary to foster bumper agricultural crops, it also runs off the fields into the streams and rivers of a watershed. When the fertilizer reaches the ocean, it just becomes more nutrients for the phytoplankton, so they do what they do best: they grow and multiply. Which leads to more organic matter reaching the bottom, more bacterial respiration, and more anoxic bottom water.\n\nThese effects can be magnified by catastrophe. When the heavy rains of Hurricane Floyd caused extensive flooding in North Carolina in September 1999, the heavy load of nutrients (from dead animals, flooded animal waste ponds, and numerous other sources) reached the sounds that lie between the coast and the Outer Banks, oxygen levels in the water plummeted. The picture at the top of the page shows the heavy load of sediments flowing into Pamlico Sound. SeaWiFS captur
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Paella. No I think they eat sea anemones or other coelenterates and encorporate their nematocysts.
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Other bigger jellyfish will eat smaller jellyfish, also the letherback sea turtle eats jellyfish, and as was pointed out certain species of sharks will eat almost anything like the tiger shark. I believe sperm whales also eat jellyfish as well as squid and octopi.
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They don't prey on any animals, they're herbivores, so only eat plant matter. And cheese!
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phytoplankton\nzoo plankton\nfilter feeders (clams, corals etc) and small fish\nlarger predatory fish and coral grazers\neven larger predatory fish
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here, use something from this....\n\n\nAnimal life. Only a few insects and other tiny animals spend their entire lives on the Antarctic mainland. The continent's largest land animal is a wingless midge, a type of fly no more than 12 millimetres long. Most land animals live at the edges of the continent. To avoid freezing to death, some lice, mites, and ticks cling to mosses, the fur of seals, or the feathers of birds.\n\nUnlike the continent, the Southern Ocean has abundant wildlife. The most common animal of the ocean is krill, a small, shrimplike creature that feeds on tiny floating organisms. Many other Antarctic animals depend on krill for food, and several countries catch and sell krill as a protein-rich food for people. The squid—a soft, boneless sea animal—also is eaten by many Antarctic animals. In addition, about 100 kinds of fish live in the ocean, including Antarctic cod, icefish, and plunderfish.\n\nSeveral kinds of whales migrate to Antarctica for the summer. Those that feed on krill are blue whales, fin whales, humpback whales, minke whales, right whales, and sei whales. The blue whale is the largest animal that has ever lived. This rare giant grows up to 30 metres long. Antarctic whales that eat fish and squid include killer whales, also called orcas; southern bottlenose whales; southern fourtooth whales; and sperm whales. Killer whales also hunt seals, penguins, and smaller whales.\n\nVarious kinds of seals live in Antarctica. They spend most of their lives in the water, where they swim, dive, and catch food. Most of them nest on the coasts. The Antarctic fur seal nests on nearby islands. The largest seal in the world is the southern elephant seal, which feeds on squid. The males may reach a length of 5 metres. Weddell seals and Ross seals eat fish and squid. Crabeater seals and Antarctic fur seals eat krill. Leopard seals hunt other seals as well as penguins.\n\nDuring the 1800's and early 1900's, hunters greatly reduced the number of whales and Antarctic fur seals. Today, international wildlife laws prohibit or restrict the killing of these animals.\n\nPenguins are the animals most often associated with Antarctica. These birds cannot fly, and they waddle awkwardly on land. But they are skilful swimmers. They streak through the ocean, diving for fish and other food. Six kinds of penguins breed on the continent. Playful Adelie penguins, the most common kind, build nests of pebbles on the coasts. The tall, quieter emperor penguin grows to about 1.2 metres. After the female emperor penguin lays an egg on ice, the male rests the egg on his feet and warms it with the lower part of his belly. Chinstrap penguins, gentoo penguins, king penguins, and macaroni penguins nest on the Antarctic Peninsula and on islands. Rockhopper penguins nest only on islands north of Antarctica.\n\nMore than 40 kinds of flying birds spend the summer in Antarctica. Many types nest on land but spend most of their time diving for food. These birds include albatrosses, prions, and a large group of sea birds known as petrels. Other birds, such as cormorants, gulls, skuas, and terns, return to land more frequently. Some of them steal food from the nests of other birds. Some land birds, such as sheathbills, nest on the peninsula. Others, including pintails and pipits, nest on islands.
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Yes. Fish that live in saltwater lose moisture from their bodies through osmosis. These fish need to drink lots of water, or they'll become dehydrated. The extra salt is then simply excreted.