Hector's dolphin (Cephalorhynchus hectori) are endemic to New Zealand's coastal waters, and at about 1.4 m in length it is one of the smallest cetaceans in the world. Hector’s dolphins are believed to be generalist feeders finding their food close to shore, with prey selection based on size which may include ahuru, yellow-eyed mullet, kahawai, arrow squid, herring, red cod and a wide variety of benthic species. Natural predators of Hector’s dolphins include sharks and probably orca.

Porpoise Bay in the southeastern corner of the South Island of New Zealand, is a popular beach and recreation area to visit for surfers, wildlife watchers and general tourists. The Bay itself is renowned for frequent visits by Hectors Dolphins which often surf the waves alongside surfers and swimmers.