BiMonSciFiCon

I remember as a kid watching this flick on tv several times and for the life of me can not recall the title or the names of any of the actors. It may be a B&W flick from either the sixties or seventies. The plot revolves around people stranded on an island who can not enter the water. Some kind of monster is in the water. The monster is like killer plankton or something. When the monster comes in contact with a victim, it eats a hole in their skin. I dont even remember how this movie ends. Does this flick sound familiar? Any ideas??

Norm de Plume

It's probably not Island of Terror, or Humanoids from the Deep (1980), which is not b&w, but I thought I'd throw those two out there.

Luther Heggs

The Flesh Eaters?

BiMonSciFiCon

I think you might be right - thanx