Exploring Crustaceans | Fun Facts and Information

How much do you know about crustaceans? Today at Light Future Art, we’re going to be sharing some fun facts about these amazing animals that you may never have heard of before!

Florida Stone Crabs
Florida Stone Crabs

1. Some species of crabs can lose their claws or legs and then grow them back, like how geckos can regrow a lost tail.
2. Many crustaceans molt a few times a year. They sometimes consume the old shell for their calcium.
3. Crustaceans are the third most diverse and abundant group of animals in the world, coming in just after insects and vertebrates. There are over 50,000 known crustacean species.




Japanese Spider Crab
Japanese Spider Crab


4. It is believed that we only know 1% of all the species of crustaceans there are in the world to be discovered.
5. The world’s largest crustacean is the Japanese spider crab, which grows to over 12 feet wide!
6. Despite their name, horseshoe crabs aren’t crabs. They’re closely related to spiders and scorpions. But they aren’t arachnids, either. They are their own group.
7. A shrimp’s heart is located in their head.



Lobster on Sea Floor

8. Although most people will think of the ocean when it comes to where crustaceans live, the majority of crustaceans actually dwell in freshwater and near rivers and springs. There are some crustaceans that need salt water, though, too.
9. Shrimp and crabs are capable of swimming, but the lobster moves around underwater by walking on the seafloor.
10. In order to attract a mate, male lobsters show their dominance by fighting with one another. Then, after there is a winner or the female chooses a mate, the two of them fight to convince her that he is strong and capable of defending her.
11. Lobsters have been known to live for over 100 years.


12. Hermit crabs sometimes trade shells with each other when they meet. They also form a line of hand-me-down shells, with a crab giving their old shell to a younger crab and receiving a new shell from a larger crab.
13. The coconut crab is the world’s largest terrestrial invertebrate. They can be known to weigh up to 10 pounds.
14. Crabs communicate with one another by drumming their claws on rocks or waving their pinchers around. Some species of crustaceans feed or migrate in groups and many work together to gather food and share. They are remarkably social animals.

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