MAMMALS 
Common Dolphin ( Delphinus delphis bairdi ): 25. This species was 
identified, in waters off the coast of southern Baja California, and 
may have been present as far south as Manzanillo Harbor. 
Spotted Dolphin ( Stenella graffmani ); 5 . Definitely ; identified 
only in the area of Manzanillo Harbor where a few played around the 
bow of the ship as it entered the harbor. 
Pilot Whale ( Globicephala melaena): 4l. Recorded in coastal 
waters of southern Mexico from ca. 18° to 20°N, and in the Counter- 
current from ca. 105 ° to 97 °W. 
Sperm Whale ( Physeter catodon ): 1 . One small ( ca. 8 feet) 
individual drifted by the ship at 10°45'N by 104°34'W. 
Fin Whale (Balaenoptera physalus ): 3 . Three individuals were 
observed in the South Equatorial Current at 00°25’s by 97°30'W. 
All were large (75+ feet) adults moving southwest. 
Sea Lion (Zalophus californicus ): 1. An immature male Sea Lion 
was tentatively identified as belonging to this specie*as it followed 
the ship at 2400 hours on 22 July. The location was 03°3 6 'N by 97°35'W. 
TABLE 6 gives a summary of all Mammal sightings during the cruise. 
TABLE 6 
MAMMAL SIGHTINGS FOR EASTROPAC 30 
Date 
Porpoise/ 
Dolphin 
Spotted 
Dolphin 
Common 
Dolphin 
Whale 
Pilot 
Whale 
Sperm 
Whale 
Fin 
Whale 
Sea 
Lion 
16 June 
75 
0 
0 
0 
0 
0 
0 
0 
17 June 
30 
0 
0 
0 
0 
0 
0 
0 
30 June 
0 
0 
0 
1 
0 
0 
0 
0 
07 July 
200 
5 
0 
0 
20 
0 
0 
0 
13 July 
20 
0 
0 
0 
0 
1 
0 
0 
14 July 
0 
0 
0 
0 
12 
'0 
0 
0 
17 July 
25 
0 
0 
0 
0 
0 
0 
0 
21 July 
0 
0 
0 
0 
0 
0 
5 
0 
22 July 
0 
0 
0 
0 
0 
0 
0 
1 
23 July 
50 
0 
0 
0 
0 
0 
0 
0 
24 July 
50 
0 
0 
0 
4 
0 
0 
0 
29 July 
40 
0 
0 
0 
5 
0 
0 
0 
30 July 
0 
0 
0 
1 
0 
0 
0 
0 
51 July 
50 
0 
25 
0 
0 
0 
0 
0 
Total 
520 
5 
25 
2 
41 
1 
5 
1 
