top of page
Narrow-Ridged Finless Porpoise (Neophocaena asiaeorientalis)
No fin, broad flat ridge
Born dark; lighten with age
Tail flukes with inward curve
Smooth, rounded forehead; beak absent
Small mouthline with upward curve
Large, rounded flippers proportionally long
-
Length: Small porpoise reaching up to two metres
-
Group Size: Solitary or small groups; occasionally up to fifty
-
Key Features: No dorsal fin; narrow dorsal ridge with tubercles; rounded head with no clear beak
-
Behaviour: Very active; darting movements, shy of boats
-
Habitat: Shallow coastal waters from Taiwan Strait to Japan
-
Conservation Status: Listed as Endangered on the IUCN Red List
bottom of page