21. Long-finned pilot whale | IFAW Web Site
found in groups of 20 to 100 animals. Herds observed in the open ocean tend to be smaller than the herds of animals stranded or driven ashore, and herd size is thought to vary depending on various circumstances such as feeding, environmental stress
http://www.ifaw.org/ifaw_united_states/save_animals/dolphins/long-finned_pilot_whale.php - 57.1kb