Tracking the Loch Ness monster

"There have been accounts of a strange creature in the Scottish loch for centuries, but from 1933 . . . there have been . . . efforts to find out just what is lurking in its unusually deep waters. Readers will discover the unusual physical features of Loch Ness as well as natural phenomena that might explain the sightings, at least, some of them"--Provided by publisher.