Balaenoptera borealis
Sei Whale
Length: 4.4m/14.5ft (newborn); 13.6-14.5m/44.9-47.8ft (adult)
Head and Beak: The sei whale has a V-shaped head with a single central ridge.
Fin and Markings: Almost erect 25-60cm high dorsal fin, strongly sickle-shaped, and situated nearly two-thirds along the back. Head and body generally all dark steely black.
Sei whale distribution map
ID: Vertical bushy blow 3m high, simultaneous with fin, before shallow roll. The sei whale dorsal fin intermediate in relative size and curvature between minke whale and northern bottlenose whale.
Sei whale
Status and Distribution: The sei whale is rare, in deep Atlantic waters from Iceland and Norway south to the Iberian Peninsula. In coastal waters, mainly recorded June to December.
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