Kamis, 18 Februari 2010

Beautiful_Dolphins_Jumping-Dolphins_Jumping






The turboprops truncation of Beautiful_Dolphins_Jumping is obviously an acrobatic species capable of powerful jumps, often curious towards people, and a regular bow-rider of boats. Most are varying shades of gray, with a stout broad beak and prominent dorsal fin. Males are larger than females. Studied carefully both in captivity and the wild, we know more about the reproductive biology of this species than that of most other oceanic dolphins. Gestation lasts nearly a year, 3-4’ long calves are born year round, and young are not fully weaned until 18 or 20 months old. And depending on location, diet varies considerably, and some populations of Bottlenose Dolphins have developed special feeding behaviors: sometimes cooperating with, sometimes stealing from, commercial fishermen; chasing fish up onto shore; hunting deep-sea fish to 1500 feet deep.
Exactly or overall, the general outlook for this species is relatively positive, though certain local populations face problems with pollution, hunting (thousands are still killed each year for food or bait), habitat loss, gill-net entanglement, and food depletion until now.