Indo-Pacific Bottlenose Dolphin

The Indo-Pacific bottlenose dolphin is more slender than the common bottlenose, with a longer, narrower beak, black spots or flecks on the belly of adults, and 23–29 teeth on each side of each jaw against 21–24. It grows to about 2.6 m and up to 230 kg, though size varies with location. Calves are 0.84–1.5 m long at birth (Reeves et al. 2002; Shirihai and Jarrett 2006, as reported on Wikipedia).

It lives in the coastal waters of India, northern Australia, south China, the Red Sea and eastern Africa. Groups are usually five to 15 animals but sometimes number in the hundreds, and the dolphins eat a wide range of fish and squid. Gestation lasts about 12 months (Wikipedia, general species account). Its occurrence in Japanese waters is documented by the National Museum of Nature and Science marine-mammal database.