|The Luminous Krayfin thrives in a humid habitat and must feed on the Dragon Bloom, a most dangerous flower. Only then can it become a leviathan. Extremely dangerous. Pray you never see this monster on the seas.|
The egg of the Krayfin was previously referred to as the "Mysterious Blue Orb" in School of Dragons, before characters understood what it was. It is a large round egg that is a glowing cyan blue in color with darker blue swirls around its circumference.
The hatchling and Short Wing growth stages of the Krayfin are seen in the School of Dragons expansion, "Secret of the Leviathan". It has four short legs, each ending in a long flipper, and long wings. It is capable of long flight at this age. Its body is rotund and has a chunky short-snouted head. It has a line of luminescent spots trailing along its body. Depending on the lighting within the game, the Krayfin appears to be indigo or dark blue, gray at other times, and even dark green.