Hermit crabs are small crustaceans known for using empty shells to protect their soft abdomens. Unlike true crabs, they do not have a hard exoskeleton on their entire body.
Scientific Name
Paguroidea (superfamily of various species)
Habitat
Found in coastal areas, intertidal zones, and sometimes terrestrial regions with access to water.
Conservation
Not currently endangered. However, threats include coastal habitat loss, pollution, and collection for the pet trade. Maintaining clean beaches is essential for their survival.
Lifespan
Typically 10–30 years, depending on the species and environment.
Fun Fact
Hermit crabs will often form "vacancy chains" where they exchange shells in a line to find the perfect fit!
Diet
Omnivorous – feeds on algae, detritus, small invertebrates, and leftover food.
Average Size
Can range from a few millimeters to over 15 cm depending on the species.
Location / Placement info
Displayed in the Coastal Reef Exhibit, near the Ocean-View Tunnel
FAQ
What is the lifespan of a Hermit Crab?
With proper care, hermit crabs can live 10–30 years, though many live shorter in captivity.
What do Hermit Crabs eat?
They are omnivores and scavengers, eating fruits, vegetables, fish flakes, meat bits, and decaying organic matter.
Are Hermit Crabs aggressive?
No, they are peaceful, but may fight over shells if not enough are available.
What is the ideal tank size?
A 10–20 gallon tank is suitable for small groups; they need vertical and horizontal space.
Do they need a specific environment?
Yes, they need humid air (70–80% RH), temperature between 24–28°C, substrate for burrowing, and extra shells to change into.
How big do Hermit Crabs grow?
Size depends on species, but some can grow up to 6 inches (15 cm) across including legs.
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