Introduction

The Finless Porpoise, a member of the porpoise family (Phocoenidae), is a local cetacean species apart from Chinese White Dolphin that inhabits the waters of Hong Kong throughout the year.

 

Porpoises are fascinating marine mammals that are often confused with dolphins due to the interchangeable use of their common names. According to scientific classification, both the Indo-Pacific Finless Porpoise and dolphins belong to the order Cetacea. This order encompasses a diverse group of fully aquatic mammals, all of which share certain characteristics, including a streamlined body shape, the absence of external hind limbs, a propulsive tail fluke, and blowholes for breathing.

 

Finless Porpoise

Chinese White Dolphin

 

Finless Porpoises and dolphins, while both classified as odontocetes (toothed whales), belong to two distinct families: porpoises are part of the family Phocoenidae, whereas dolphins belong to the family Delphinidae. 

 

Features of Finless Porpoises and dolphins

 

The Indo-Pacific Finless Porpoise is a species that has garnered significant research interest, particularly regarding its life history, stock structure, abundance, and distribution.  These researches are crucial for understanding the species' ecological needs and informing conservation efforts.