1) Octopuses have 8 arms with two rows of suckers around their soft body which lacks a skeleton. They have a large head containing two large eyes, a brain, and 3 hearts.
2) They eat small fish, crustaceans, algae. Females lay up to 150,000 eggs in a den and guard them for a month without eating, dying of exhaustion afterwards.
3) Octopuses live in oceans hidden among rocks and coral, coming to coastal areas to reproduce in spring. They are strong, intelligent but timid, hunting at night after camouflaging during the day.