Adaptation in Plants & Animals In millions of years plants and animals have developed certain characteristics that help them to survive the environment. The deeper down below the ocean waves you go, the weirder things get. Scientists are proposing similar treatment for marine animals … It matters little if there is six feet or six thousand feet beneath a swimming fish. A fish or a plant near the surface feels little effect from the great depths. Azoic hypothesis: The azoic hypothesis states that deep-ocean waters below 300 fathoms were barren. How do animals survive at lower depths in the ocean? Sperm whales can dive down to this level in search of food. This is completely false. Snailfish, too, have not been observed lower than 8,000m (26,246.7ft). Protecting forests and wetlands, which absorb and store carbon, is one way to slow climate change. Have students make predictions about ocean habitats. Why would they need to change their buoyancy? 3. However, Dumbo octopuses have been known to only dive to 7,000m (22,965.9 ft). An animal living at 10,000 feet depth, however, is greatly influenced by the depth of the water over it. Forbes, who developed the hypothesis did not know about marine snow which can feed animals at lower depths. Each of these animals were described at over 2,800m (9,186ft) their currently known depth. In spite of the pressure, a surprisingly large number of creatures can be found here. Bioluminescent organisms live throughout the water column, from the surface to the seafloor, from near the coast to the open ocean. In the deep sea, bioluminescence is extremely common, and because the deep sea is so vast, bioluminescence may be the most common form of communication on the planet! The answer depends upon where in the ocean it lives. Although some sea creatures depend on light to live, others can do without it. Allie and her friends see a Dumbo octopus when on the seafloor of the Sirena Deep. The deep sea angler, known also as Melanocetus johnsoni, is a grotesque-looking fish that lives in the extreme depths of the ocean. Its round body resembles a basketball, and indeed, it looks like it could easily swallow one. The water pressure at this depth is immense, reaching 5,850 pounds per square inch. Give an example of a marine animal that would need … this adaptation and explain why it would be beneficial to have this adaptation. Ask: How different is life at the surface of the ocean from life at the bottom? What types of adaptations might marine animals need to have near the surface versus near the bottom? How do animals survive at lower depths in the ocean? Ask students to predict how different ocean habitats might affect the animal adaptations seen there. Why would they need to change their buoyancy? One habitat is the ocean. How to use this Desert Animal Adaptations and Habitats PowerPoint. Info. The ocean is divided into three zones based on depth and light level. 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