When a monster starts preying on members of the Swim Team, Buffy takes it upon herself to protect the star players, while Xander goes undercover to discover the truth about the missing team mates.
original airdate--May 5,1998 rating--3.6 million
songs--Theme song--buffy the vampire slayer by Nerf Herder
Monster of the Week:
Members of the swim team were exposed to a steroid mix which was added to the water supply in the steam room. The coach invented the mixture using fish DNA and reports of similar experiments made by the Soviet Union. The mix transformed four of the boys into amphibious monsters, who all escape to live in the sea.