3 SUMMARY OF THE NON-GRID MARINE MAMMAL OBSERVATIONS - EAC 38 Observations and data recorded for marine mammals during the non- Grid part of Eastern Area Cruise 38 were possibly the most significant of all non-Grid observations. These observations are also pertinent to our understanding of some of the marine mammals of the Grid study area. Six species of cetaceans and three species of pinnipeds were re- corded. The following is an outline of these observations. Eight sightings of Dall Porpoise (Phocoenoides dalli) that totalled some 44 to 46 porpoise. Seven of the observed pods were of porpoise traveling. The other sighting was of a group milling about the surface and diving, probably for food. Three to five gray whales were recorded. One single whale was noted migrating north. The other two whales were observed inside Pt. Conception probably nursing calves. Sea conditions and the distance these whales were from the ship prevented us from determining the posi- tive presence of the calves. Two schools of Common Dolphins (Delphinus sp.) were observed in close proximity. One group of dolphins had solid dark dorsal fins, while animals in the other group had grayish patches in their dorsal fins. The dolphins of the latter school were aberrantly colored with a large patch of "white" posterior to the dorsal fin on both sides of the dorsal flanks. A third group of Delphinus was noted mixed with Pacific Striped Dolphins (Lagenorhynchus obliquidens). This mixed group was also associated with a school of approximately 500 Northern Right- whale Dolphins (Lissodelphis borealis) and about 100 Risso Dolphins (Grampus griseus). Two specimens of Lissodelphis were killed but only one carcass was recovered. Blood samples and stomach contents were collected from the specimen. These four species were probably associated in the same area be- cause of one or more food species. Lissodelphis have not previously been recorded this far south (32°15'), but based on what is known of its zoography one would expect to find Lissodelphis in this area. Both Grampus and Lissodelphis have been observed regularly in the eastern Grid and non-Grid areas. Many of these animals are probably the same ones we have seen on previous surveys. The southern movements of these two species (Lissodelphis and Grampus) are probably related to hydrographic conditions which caused their food species to move south. These species do not utilize the same food species. Both of these dolphins probably range relatively little north or south of the area offshore of Pt. Conception. Shortly after the above group of dolphins was observed, a school of approximately 100 Lagenorhynchus was noted some distance from the ship. This species was also observed just out from Pt. Loma the day we ar- rived in San Diego.