PL. 1a 



ALLAN HANCOCK PACIFIC EXPEDITION 



VOL. 19 



1.' Emerald Cove, Catalina Island, Califurnia. Nuv. 17, 1951. In 

 17 fms. 33 28' 05" north latitude, 118° 31' 17" west longitude. 

 The rubbly appearance is caused by masses of Chaetoptcrus 

 tubes, tubicolous anemones, and other tube-dwelling animals. 

 A two sq. ft. sample yielded at least 60 species of metazoan 

 invertebrates, of which 28 are annelids, 3 are enteropneusts, 

 and the others are representatives of different phyla or classes 

 of animals. The bottom is highly productive. The base line 

 represents about five feet. 



1 Photographs 1 to 4 were made with the benthograph operating from the Vdiro iV, 

 by William Fortin, staff photographer of the Allan Hancock Foundation. 



