Percnon planissimum ãã²ã¢ã·ã¬ã These crabs are really common at this location, hiding in the crevices and cracks of submerged boulders. I've done a sunset dive here before and as the water turns dark they come out in great numbers, glowing in the dark with their bright colors. Oshima, Tokyo æ±äº¬é½å¤§å³¶çº
This guy was in a crack about 10 ft down or so. The process: dive down, struggle to get a pic, start suffocating, resurface, repeat. Taking pics while snorkeling is hard.