Bermuda's waters.

Dr. Paul Holle, from Massachusetts, will give a lecture, illustrated with slides, at the Bermuda Biological Station, starting at 8 p.m.

Dr. Holle has headed several snorkelling trips to Bermuda for American students from Worcester College, Massachusetts, where he lectured.

He has taken scores of slides of the marine world -- including sponges, fishes, snails, and corals.

"I have been coming here since 1951 and the lecture will be on my personal experience,'' he said.

The hour-long lecture, entitled "Snorkelling Bermuda Waters'' is open to the public, but especially associate members of the biological station. It will be held in the Hanson Hall.