Sea Challengers, Monterey.

Sea Challengers, Los Osos, Calif.

Sea Challengers, Monterey, California.

Sea Challengers Natural History Books and California Academy of Sciences.

Sea Challengers, Monterey, CA, 105 pp.

"Indo-Pacific Coral Reef Field Guide," by Gerald R. Allen and Roger Steene, published by Tropical Reef Research, Singapore, is available for $42.95 from Sea Challengers Natural History Books, Danville, Calif., (925) 327-7750, and by back order from Amazon.com for $39.95.

Sea Challengers Natural History Books, Washington, 426 pp.