Marine animals, such as hawksbill sea turtles, angelfish, sea slugs, some starfish and the larvae of sponge-flies, feed on sponges. Not many marine animals eat sponges, because multicellular organisms contain less nutrie... More »

Most sea sponges are detrivorous, meaning they consume organic debris and various microbes that drift through ocean currents. Harp sponges, however, are carnivorous and use hooks located on their arms to catch shrimp and... More »

Sponges belong to the phylum known as porifera, which includes three groups known as hexactinellida, demospongia and calcarea, according to the University of California, Berkeley. There are more than 5,000 sponges in the... More »

Sea cucumbers are eaten by crabs, fish, crustaceans, sea turtles and sea stars. Sea cucumbers are also eaten by people around the world, particularly those that live in Asia. More » Pets & Animals Marine Life

Sea sponges are bottom-dwelling, multi-cellular animals. Most sea sponges attach themselves to the ocean floor, other sea animals or rocks for the duration of their lives. A small number of sea sponges are mobile creatur... More »

Creatures that eat jellyfish include tuna, sharks and sea turtles such as the leatherback and the hawksbill. These animals eat jellyfish despite their prey's stinging tentacles. Jellyfish also eat each other. More » Pets & Animals Marine Life Jellyfish

Fish are the most prominent predators of leeches, and other predators include aquatic birds, water bugs, crayfish, turtles, snakes and other leeches. Regardless of their habitat, all leeches are preyed upon. However, the... More »