After more than 30 years of studying the world's smallest dolphins Liz Slooten and Steve Dawson still enjoy getting out on the water to observe Hector's dolphins, writes Alison Ballance.
After more than 30 years of studying the world's smallest dolphins Liz Slooten and Steve Dawson still enjoy getting out on the water to observe Hector's dolphins, writes Alison Ballance.