![]() It’s mouth is hinged so they can open it as wide as they want. It has a large mouth with teeth that don’t fit in it’s mouth. One type of fish that lives in the Twilight Zone is the viperfish. There are filter feeders, grazers, and predators. There is not enough light for photosynthesis so the organisms have to eat food that is filtered down from above. This is when a fish has a certain chemical that creates light to help them see. ![]() Many of the animals in this zone have bioluminescence. There is not much light, but there is enough to see during the day. It is from 200 meters down to 1000 meters down. The Mesopelagic Zone, also known as the Twilight, or Midwater Zone, is the second ocean zone. Their gills (respiratory organ) are well-developed. Most of the fish in this zone are highly mobile with scaled, muscular bodies and rigid bones. Supported Animal Species: Squid, crab, cuttlefish, lancetfish, chain catshark, swordfish, wolf eels, bigeye tuna, calm, gastropods, krill. Supported Plant Species: No plants exist in this zone due to lack of light. Sunlight penetrates to a very little extent, which makes the process of photosynthesis impossible. This zone extends from epipelagic zone at about 200 meters (656 feet) to a depth of about 1000 meters (3,280 feet). They begin as males and turn into females. However, they can be as small as only a few inches long. They ahve a soft body between two hard shells that are attached by a muscle. They are all brightly covered and live in reefs in warm waters. They need all these teeth because they’re carnivores.Īnother type of fish in the Sunlight Zone is the Angelfish. Sharks can have up to 3,000 teeth at one time with 5 rows of teeth. Bottom-dwelling sharks have flat bodies that help them hide in the sand. They range from 7 inches long to 50 feet long and most sharks have streamlined bodies that can help them easily go through the water. Some organisms in the Sunlight Zone are sharks. Therefore this is the only zone that has plants. This is the only zone that has enough light for photosynthesis. It ranges from 27 to 207 degrees Fahrenheit. It has the most visbile light, and the most heat of all the layers of the ocean. The Epipelagic Zone informally known as the Sunglight Zone, is from the surface of the water to about 200 meters. Most of the fish in this zone have a sleek body. Predator as well as forage fish are mostly spindle-shaped, having large mouths, smooth bodies, and bifurcated tail. The two main type of fish in this zone are forage and predator fish. Supported Animal Species: Bigeye tuna, dolphin, orcas, blue whales, sharks, jellyfish, sea turtles. Supported Plant Species: Seaweed or free-floating algae, red algae, green algae, brown algae, phytoplankton, angiosperms, mangroves, seagrass. Sunlight penetrates this zone which facilitates the process of photosynthesis. Microscopic plants called phytoplanktons are present in this zone. This zone has the depth of about 200 meters (656 feet) below the ocean surface.
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