ட ல ப ன ம ன கள ப பற ற ய ச வ ரச யம ன தகவல கள , group of dolphin fish flowing scene and informations

, sharkboys, dolphins, fish, crowdedfish டலபன மன கபபறறவடம கபபறற வடம கடச Dolphinis a common name ofaquatic mammalswithin the infraorderCetacea. The term dolphin usually refers to the extant familiesDelphinidae(the oceanic dolphins), Platanistidae(the Indianriver dolphins), Iniidae(the New World river dolphins), andPontoporiidae(thebrackishdolphins), and the extinctLipotidae(baiji or Chinese river dolphin). There are 40 extant species named as dolphins. Dolphins range in size from the 1. 7m (5. 6ft) long and 50kg (110lb)Maui s dolphinto the 9. 5m (31ft) and 10t (11 short tons)killer whale. Several species exhibitsexual dimorphism, in that the males are larger than females. They have streamlined bodies and two limbs that are modified into flippers. Though not quite as flexible asseals, some dolphins can travel at 55. 5km, h (34. 5mph). Dolphins use their conical shaped teeth to capture fast moving prey. They have welldeveloped hearing