Many species of polychaetes (marine annelid worms) undergo epitoky whereby sexually immature worms transform into pelagic morphs capable of sexual reproduction. After fertilization, they release their gametes through rapid disintegration.

Many species of polychaetes (marine annelid worms) undergo epitoky whereby sexually immature worms transform into pelagic morphs capable of sexual reproduction. After fertilization, they release their gametes through rapid disintegration.