Do crab eat shell or seweed?

Crabs are omnivores, meaning they eat both plants and animals. So, the answer is they eat both shell and seaweed!

Here's a breakdown:

* Shells: Crabs eat shells for the calcium, which is essential for building their own shells. They use their strong claws to crack open shells and eat the soft creatures inside.

* Seaweed: Crabs will eat seaweed for a source of nutrients and energy. Different crab species prefer different types of seaweed.

Crabs are opportunistic feeders and will also eat:

* Dead fish and other animals

* Worms

* Plankton

* Algae

It's important to note that the exact diet of a crab depends on the species and its environment.