1 
7 
The first group noted was a group of ca_. 150 mixed dolphins 
( Lagenorhynchus and Delphinus) . These were not followed and 
were swimming away from the others. 
The second group noted was a widely dispersed school of ca . 
500 Lissodelphis . These dolphins were divided into numerous 
subgroups of 10 to 30 specimens. Numerous different dolphins 
were noted .jumping up off of the water, as stated above. No 
young were observed. Numerous different subgroups would ride 
the bow. DeLong shot (c 00 shot) and instantly killed one 
riding the bow. It floated a couple of minutes, then sank. 
DeLong then harpooned a specimen which was then brought on 
board. (Killed at ca_. 1620). 
Chased animals again. They did not ride bow again, but started 
swimming fast and coming out of the water together. On several 
occasions dolphins were not, ed to slap the fluke on the surface 
of the water before diving. 
The third group noted was pod of ca. 100 Grampus . These dolphins 
also were divided into many subgroups. Numerous small (newborn) 
were observed. These were very gray in color (cf. Tursiops 
truncatus ). Many of the large animals were in groups with only their 
heads, dorsal surfaces, and dorsal fins. The other animals were 
blackish in color as Globicephala . Animals were generally milling 
about the surface thus allowing us to study their heads, colora¬ 
tions, and sizes. None of the Grampus rode the bow, but several 
* different groups approached within 100 to 200 feet of the ship. 
1715 Lagenorhynchus - Pacific striped dolphin ca.. 100 
These were noted some distance from the ship. 
29 March 1968 
0950 Pacific Striped Dolphins - 2 ( Lagenorhynchus obliquidens ) 
Two large dolphins of this species were observed ca_. one mile off 
Pt. Loma. The dorsal fins on both animals were greatly recurved. 
This is commonly observed in older dolphins of this species (Brown 
and Norris, 1956). 
* 
