Answer:
Cuttlefish have the amazing ability to change their color and texture in order to blend into their surroundings. They can detect how much light is being absorbed into the environment, then use that information to mimic it with their own pigments. They have 3 skin layers (yellow, red, and brown), which can be stretched in different ways to make unique colors and patterns. Their skin also has papillae, which let cuttlefish appear rigid, like coral. Together, these features allow cuttlefish to escape predators, as well as sneak up on unsuspecting prey.
Source: UWLax
Tubeworms turn toxic water into food.
Weird_Ocean_19
NOAA
Scientists long thought that life couldn't exist at hydrothermal vents deep in the ocean. But in 1977, they found giant tubeworms living along the Galapagos Rift, 8,000 feet below the ocean's surface. These tubeworms are surrounded by total darkness in their habitat and they live in water filled with toxic gas and acid.
These creatures have no stomach, gut, or eyes. Instead, they are "bags of bacteria" with heart-like structures and reproductive organs. The bacteria inside the worms use the toxic hydrogen sulfide in the water, which would kill most other animals, as an energy source to produce carbohydrates.
Source: National Geographic
Okapi have scent-glands on their feet.
okapi
The okapi is one of the oldest mammals on earth. Jens Meyer/AP
Okapi are strange animals that look like a combination of a giraffe and a zebra. They live in the Democratic Republic of Congo, where it's very hot and predators, such as leopards, are always lurking. To stay alive, okapi have a three key adaptations. First, they have scent-glands on their feet to mark their territory. Second, they have infrasonic calls, which allows them to communicate with their calves without predators hearing their call. Finally, they have 14-18 inch-long tongues, which can be used to wash their eyes and ears.
