Lybia edmondsoni: THE FABULOUS POM-POM CRAB
Posted by Matthew Cobb at Why Evolution Is True
Lybia is a genus of small crabs in the family Xanthidae. Their common names include boxer crabs, boxing crabs and pom-pom crabs.
They are notable for their mutualism with sea anemones, which they hold in their claws for defense. In return, the anemones get carried around which may enable them to capture more food particles with their tentacles. [Wikipedia]
Animalia > Arthropoda > Crustacea > Malacostraca > Decapoda >
Brachyura > Xanthidae > Lybia
And this looks like Lybia edmondsoni Takeda & Miyake, 1970