Guardian Nature School Team Contact Blog Project Noah Facebook Project Noah Twitter

A global community of nature enthusiasts
photographing and learning about wildlife

Join Project Noah!
nature school apple icon

Project Noah Nature School visit nature school

Blue Land Crab

Cardisoma guanhumi


The giant land crab is the largest of Florida's semi-terrestrial crabs. This animal can measure up to 6in (15cm) across its carapace. In its juvenile form, the crab is a dark brown, purple, or orange in color. As an adult, it is a bluish-gray color. Females sometimes appear light gray or white. One claw is larger than the other and the walking legs are sparsely hairy. (Ref:


As adults, land crabs are terrestrial (land-dwelling) and are found as far as 5 miles from the shoreline, returning to the sea only to drink or breed. They live in burrows several feet deep or at least to a level that will allow water to seep in for moisture. Giant land crabs are primarily vegetarians, preferring tender leaves, fruits, berries, flowers and some vegetables. Occasionally they will eat beetles or other large insects. (Ref:


I brought the pictures of this crab here to be identified, as my friends had been given him at an epidemiological show years ago, but never knew what it was. It spent it's life in a damp viv, indoors, in Croydon, UK. As you can see from the pictures, I don't think it reached it's full size.

Species ID Suggestions

Sign in to suggest organism ID


OlanaVoljeti 9 years ago

Because I didn't realise I could do that ;)

Done now!

Scott Frazier
Scott Frazier 9 years ago

That's great. Why not update your spotting with that information if you know it to be accurate? It reads "unknown spotting".

OlanaVoljeti 9 years ago

Thank you :)

I've found out what she is. Cardisoma Guanhumi - the blue land crab. Related to the rainbow crab family. Sadly, I think this means that she was not kept correctly throughout her life :(

Scott Frazier
Scott Frazier 9 years ago

Moved to the Arthropods category :-)

Spotted by

London, England, United Kingdom

Spotted on Jul 8, 2010
Submitted on Jul 8, 2014

Related Spottings

Blue crab Blue Land Crab Blue Land Crab Cangrejo azul

Nearby Spottings

Holly Blue Swan Spotting Spotting
Noah Guardians
Noah Sponsors
join Project Noah Team

Join the Project Noah Team