sei
sei — noun
1. a large sea animal of the baleen whale family that lives in oceans around the wo
a large sea animal of the baleen whale family that lives in oceans around the world, with a dark gray body and a narrow ridge running along the top of its head
The research team spotted a sei whale breaching near the coast of Iceland last June.
spotting a large marine animal at sea
Ravindra read that sei whales can swim faster than most other large whale species.
read + that-clause for learning facts
Eshe showed her class a photo of a sei whale and explained its feeding habits.
A narrow ridge runs along the top of a sei whale's head, above its blowhole.
Marine scientists track sei whale movements to learn about their migration routes.
用法筆記
Commonly used in marine biology and whale-watching contexts. The full scientific name Balaenoptera borealis often appears in formal writing.