Forget sheep herding, this dog loves to graze dolphins.

A mixture of Australian Shepherd and Border Collie Mako enjoys swimming and diving with a flock of dolphins near his home in Hawaii.

The 3-year-old puppy can be seen barking while interacting with sea creatures including whales, manta rays and dolphins.

Owners Kylie and Cam Grant run a business called Cayman Ocean Safari, which often helps Mako-treated guests take their cruise.