Baumgartner et al.: Cetacean habitats in the northern Gulf of Mexico 
227 
Bottlenose Dolphin 
Q. 3 - 
o. 2 - 
2 1 
O o 
1000 1500 2000 
Distance Along 200m Isobath (km) 
98 96 94 92 90 88 86 84 82 80 W 
Galveston New Orleans Tampa 
Brownsville Lake Charles Panama City Key West 
0 500 1000 1500 2000 2500 3000 
Distance Along 200m Isobath (km) 
0 500 1000 1500 2000 2500 3000 
Distance Along 200m Isobath (km) 
Galveston New Orleans Tampa 
Brownsville Lake Charles Panama City Key West 
Galveston New Orleans Tampa 
Brownsville Lake Charles Panama City Key West 
0 500 1000 1500 2000 2500 3000 
Distance Along 200m Isobath (km) 
Figure 4 
Spatial distribution of group sightings and sighting rates for each species. Sightings and 1-km transect sections (effort) 
were projected onto the 200-m isobath and the group sighting rate distributions were computed by using equal-effort 
class sizes. The sighting rate distribution of the bottlenose dolphin only includes effort from 1000 m depth and shallower 
because no bottlenose dolphins were encountered seaward of the 750-m isobath. The sighting maps and sighting rate 
distribution plots are aligned geographically to facilitate comparison. The 200- and 2000-m isobaths are shown in the 
sighting maps. 
