Although the serene sea sponge looks pretty, the pus-filled boils you get if you touch them aren't. Sea sponges are filled with poriferatoxins, which are toxic substances found in sponges. Strict warnings are given to divers to watch out for these innocent-looking creatures.With their porous yet stable structure, sponges provide the perfect hotel for many different sea creatures. These include mollusks, worms, crustaceans,algea, fish, and even other sponges! Pictured left is an oceanic relationship between finger sponges and other sea creatures.
Although sponges are attached to the sea floor, they are meat-eaters like the sea anenome. Sponges eat by catching microorganisms and organic debris in tiny pores in their bodies. They are said to get their poisonous properties from the food they take in.