Crab Larvae in Indian Ocean, Underwater Cave, Gecarcoidea natalis, Christmas Island, Australia

christmas island red crab gecarcoidea natalis christmas island australia red crab land crab crab crustacea marine invertebrate red endemic crab larvae juvenile crab megalops megalopae young crab post larva baby crab crab return crab migration migration cave indian ocean underwater cave grotto geography nature sea ocean wildlife indian ocean underwater no people large group of animals split image surface level horizontal n/a n/a rm