Hermit crabs are omnivorous scavengers, eating microscopic mussels and clams, bits of dead animals, and macroalgae. These crustaceans have been misnamed for two reasons: First, they’re not true ...

Despite their common name, horseshoe crabs are more closely related to spiders and scorpions than to “true crabs,” which are crustaceans. They’re in the class Merostomata, which means “leg ...

It’s important to note that not all crabs are true crabs. For instance, the blue crab and Dungeness crabs, which are part of ...