AP BIOLOGY

Detailed explanation-1: -Octopuses. The octopus is a marine mollusk and a member of the class Cephalopoda, more commonly called cephalopods. Cephalopoda means “head foot” in Greek, and in this class of organisms, the head and feet are merged. A ring of eight equally-long arms surround the head.

Detailed explanation-2: -Octopuses (or octopi, if you prefer) are cephalopods, invertebrates that also include squid and cuttlefish. They have bulbous heads, large eyes, and eight very useful arms. “Cephalopod” is Greek for “head-foot, ” which makes sense, since their limbs are attached directly to their head.

Detailed explanation-3: -The octopus performs its famous backward swim by blasting water through a muscular tube on the body called a siphon. Octopuses also crawl along the ocean’s floor, tucking their arms into small openings to search for food. Seals, whales, and large fish prey on octopuses.

Detailed explanation-4: -Octopuses are ocean creatures that are most famous for having eight arms and bulbous heads. Some other fun facts: They have three hearts and blue blood; they squirt ink to deter predators; and being boneless, they can squeeze into (or out of) tight spaces.

Detailed explanation-5: -Octopuses can use camouflage, which is when an animal blends into its surroundings. They can change their own color and texture to hide. If they’re attacked, they can use poisonous chemicals to hide from predators and kill their prey. As a last resort, they can even lose an arm and later regenerate, meaning regrow it!