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We present to you: The Halimeda Crab

By Leonard Ho - Posted Feb 28, 2013 08:00 AM
Nature [expletive] rocks! Introducing Huenia heraldica, the halimeda crab. Its ability to camouflage in Halimeda algae (duh!) is nothing short of remarkable. These crabs range throughout the vast Indo-Pacific, yet they're difficult to spot and rarely encountered by aquarists because they are true masters of disguise.
We present to you: The Halimeda Crab

Huenia heraldica, the halimeda crab

Halimeda algae is a smart object to mimic since very few organisms enjoy dining on this hard algae.

To be honest, H.heraldica cheats a little bit with its camouflage. This species is a decorator crab; The halimeda crab attaches rigid fronds of halimeda algae to its rostrum (the forward extension in front of the eyes) to enhance its camouflage.  It really appears as if giant green calcareous horns are growing out of the crab's head.

But the rest of its green, halimeda-like carapace is au naturel.  Simply awesome!

Author: Leonard Ho
Location: Southern California

I'm a passionate aquarist of over 30 years, a coral reef lover, and the blog editor for Advanced Aquarist. While aquarium gadgets interest me, it's really livestock (especially fish), artistry of aquariums, and "method behind the madness" processes that captivate my attention.


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