Diving Coral Reefs

Moray eels: The most cosmopolitan of reef fish, but why?
Genetic variations among moray eels don’t show any geographic patterning, apparently because a long-lived larval form called a leptocephalus maintains gene flow among populations. With geographic isolation off the table, it is difficult to understand how the morays diversified into many species.
Diving Coral Reef near Matanzas, Cuba #1