Höhlentauchen / Cave Diving Riviera Maya
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Blue Dancing Crab

Blue Dancing Crab

True crabs are distinguished from other so called crabs because they have a very short tail only which they sometimes also fold unter their body. The list of inhabitants of the Cenote logbook of the Riviera Maya names is as Blue Crab (Cardisoma guanhumi) a species  that lives only on land, however, based on fotographic comparisions and descriptions I identify this as Calllinectes sapidus, commonly known also as blue crab.

I call her dancing grab because this crustacean has a very territorial behaviour that is quite funny to look at. If you dive slowly closer, they start to wave the last pair of legs from left to right as if they hear some music. This pair of legs is flattened and normally used for swimming.

It is said that the blue crab is quite common on the golf of Mexico,  but the only place known to me so far is Casa Cenote close to Tulum.

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