More cool water animals

1. 

Nudibranchs occur in seas worldwide, ranging from the Arctic, through temperate and tropical regions, to the Southern Ocean around Antarctica. They are almost entirely restricted to salt water. Nudibranchs live at virtually all depths, from the intertidal zone to depths well over 2.300 ft ((700m)). The greatest diversity of nudibranchs is seen in warm, shallow reefs, although a new nudibranch species was discovered at a depth near 8.200 ft ((2,500m)). Some nudibranchs are poisonous while others pretend to be poisonous, which is evident by their vibrant colors. They feed on stinging cells of hydrozoids and store them in the rear of their body for protection. They can also ingest toxins from sponges and become toxic and inedible. Some nudibranchs produce their own chemicals. 

2. 

Feather stars are unstalked crinoids that live in both shallow water and the depths of the ocean. Researchers have recorded feather stars moving at up to 5 centimeters per second. Although this might not seem like an incredible speed, it is essential for their health and survivability. Their speed primarily depends on gender, native tendencies, and vicinity of predators. They consume small food particles floating around the ocean. With feather arms and tubular feet, they are able to trap any edibles using a sticky mucus that feeds into the mouth. 

3. 

Carolina anole adult males are usually 4.9-8 in ((12,5-20,3 cm)) long, with about 60-70% of which is made up of its tail, with a body length up to 3 in ((7,5 cm)). Colour varies from brown to green and can be changed like many other kinds of lizards. Male anoles are strongly territorial creatures. Some have even been witnessed fighting their own reflections in mirrored glass. The male will fight other males to defend his territory. On sighting another male, the anole will compress his body, extend the dewlap, inflate a dorsal ridge, bob his head and attempt to chase the rival away. If the rival male continues to approach, anoles will fight by biting and scratching each other. Serious injury is rare, but males often carry numerous scars on their head and face, especially during the mating season. Their territory, which is about 1 m³, usually includes two to three females.