Depending on the species, sea crabs eat plankton, worms, fish, shrimp and other crabs. Crabs that live in the deep sea survive on foodfalls, which are scraps of meat that fall to the ocean floor after being killed by another sea animal.Know More
Some crabs are born with a stored yolk that contains enough food for their first stage of growth. Others begin eating small plankton-like organisms right away. The Red King crab goes through a developmental stage where it is unable to eat or digest food.
Sea crabs can survive a length of time without food. This assists them when food sources are scarce or when they are looking for a new feeding area. .Learn more about Crabs
Crabs usually eat algae. Crabs are omnivorous, meaning that they will eat both plants and other animals for sustenance.Full Answer >
At each stage of life, blue crabs are susceptible to a different class of predator, though their most consistent predator is the human being. During the larval stage, blue crabs' most common predators include small species of fish and jellyfish. In their adult, developed stage, larger fish, birds and even many species of mammals will prey on blue crabs.Full Answer >
Saltwater crabs are primarily carnivorous, preying on animals that live on or near the ocean floor. The most common species of ocean-dwelling crabs feast largely on small fish, worms, squid, snails and animal matter found on the ocean floor. Most crabs also eat their own species, some going as far as to deliberately trap them, according to USA Today.Full Answer >
Most ocean crabs are considered carnivores and eat just about any meat they can find. There are a few species that are omnivores, however, and eat plants as well as meat.Full Answer >