Beluga Whale

https://faunafocus.wordpress.com/?page_id=8915&preview=true#jp-carousel-8929

Beluga whales are the only living member of the genus, Delphinapterus, meaning “dolphin without a fin,” as they have a shallow ridge along the back, instead of a dorsal fin.

Beluga whales are the only living member of the genus Delphinapterus. The name derives from the Greek words delphinos (“dolphin”), a (“without”) and pteron (“fin” or “wing”). Belugas lack a dorsal fin, hence the name “dolphin without a fin.” A dorsal fin would be prone to injury from ice and would be a site for heat loss. Belugas do, however, have a shallow ridge along their back.

However, in spite of what the name suggests, belugas are not dolphins, which is a term reserved for members of the family Delphinidae.

The genus and species Delphinapterus leucas were identified by Pallas in 1776.

Sources: (AMMPA, 2014, 2017; Katona, Rough, & RIchardson, 1993; Leatherwood, Reeves, Perrin, & Evans, 1982; O’Corry-Crowe, 2002; Paine, 1995; Williams, 2002)
Image: GrantBWilson

Advertisements

Comment

Fill in your details below or click an icon to log in:

WordPress.com Logo

You are commenting using your WordPress.com account. Log Out /  Change )

Google+ photo

You are commenting using your Google+ account. Log Out /  Change )

Twitter picture

You are commenting using your Twitter account. Log Out /  Change )

Facebook photo

You are commenting using your Facebook account. Log Out /  Change )

Connecting to %s

This site uses Akismet to reduce spam. Learn how your comment data is processed.

%d bloggers like this: