I encountered this spectacular 3 cm size Spotfin Flounder larva at about 30 feet depth during a blackwater scuba dive, while drifting in the ocean in the darkness of night, over 700 feet of water, in the Gulfstream off the east coast of south Florida. During such a dive, one can witness the largest migration on planet Earth that occurs every night, with creatures living hundreds of feet below the ocean surface swim toward the shallow depths, larval stages of marine creatures spending their early life, permanent residents (pelagic animals) as well as deep water animals that migrate vertically at night to feed. Like most other fishes, the larva doesn’t look anything like the adult. One of the interesting facts about flounders is that they are born with one eye on each side of their head, but as they grow from the larval to juvenile stage through metamorphosis, one eye migrates to the other side of the body. As a result, both eyes are then on the side which faces up when they live as bottom dwellers during adulthood.