Dalls Porpoise Skull Replica
Dall’s porpoise is found throughout the northern Pacific Ocean south of the Bearing Sea. Using its small spade-like teeth, it feeds mainly on fish and small squid.
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Dalls Porpoise Skull Replica measures 11.6 inches. Dalls Porpoise Skull Replica is museum quality polyurethane cast. Made in USA. 2-part skull (separate cranium & jaw). Our precise skull can be used as a teaching tool, museum skull exhibit, home decor skull, or office decor skull.
Dalls porpoise or Phocoenoides dalli is a species of porpoise endemic to the North Pacific. It is the largest of porpoises and the only member of the genus Phocoenoides. The species is named after American naturalist W. H. Dall.
Dalls porpoise or Phocoenoides dalli is the only member of the genus Phocoenoides. The dalli- and truei-types were initially described as separate species in 1911, but later studies determined that the available evidence only supported the existence of one species.
Currently, these two color morphs are recognized as distinct subspecies, Dalls porpoise (Phocoenoides dalli dalli) and True’s porpoise (Phocoenoides dalli truei).
Dalls porpoise or Phocoenoides dalli can be easily distinguished from other porpoises and cetacean species within their range. They have a wide, robust body, a comparatively tiny head, and no distinguished beak.
Their flippers are positioned at the front of the body and a triangular dorsal fin sits mid-body. Patterns of coloration are highly variable, but Dalls porpoises are mostly black, have white to grey patches on the flank and belly, and frosting on the dorsal fin and trailing-edge of the fluke.
They are the largest porpoise species, growing up to 7.5 ft. in length and weighing between 370 and 490 lb. Sexual dimorphism is apparent in body size and shape, with mature males being larger, developing a deeper caudal peduncle, and having a dorsal fin that’s significantly angled forward in comparison to a female’s.
Two colormorphs have been identified: the dalli-type and truei-type. The truei-type, found only in the western Pacific, has a white belly patch that extends farther forward across the body than that of the dalli-type.
Dalls porpoises or Phocoenoides dalli are limited to the North Pacific: in the east from California to the Bering Sea and Okhotsk Sea, and in the west down to the Sea of Japan. They have been sighted as far south as Scammon’s Lagoon in Baja California when water temperature was unseasonably cold.
Dalls porpoise or Phocoenoides dalli are opportunistic, hunting a variety of surface and mid-water species. Common prey are mesopelgic fish, such as myctophids, and gonatid squid.
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