GRID MAMMALS As mentioned earlier in this report, mammals were noted in good numbers in the grid. A total of 1312 individuals of three identified and four unidentified species was recorded. The north section yielded the greatest number of sightings, but, as emphasized earlier, it was this area in which we had calm seas and hence better conditions for mammal sightings. North section The Otarids were not as common as on some earlier cruises. Seventeen unidentified seals (most were probably Fur Seals) and one unidentified sea lion were observed. Cetaceans were recorded in good numbers. Most impressive were two schools of the rare Right Whale Dolphin (Lissodelphis borealis). One school of over a thousand was seen traveling north, and shortly after another group of 150, also moving north, was recorded. Other Cetaceans in the north area included 7 Sperm Whales (Physeter catodon), sixteen unidentified whales, and one whale or dolphin. Central Section Mammals in the central section were represented by two schools of Baird's Dolphin (Delphinus delphis) totaling one hundred individuals. Several swam ahead of the ship for varying lengths of time. South Section In the south area 12 Sperm Whales, seven Baird's Dolphin, and one unidenti- fied whale were seen.