Things with wings - sea dweller

[thkn777]

I know, I know... the expert would call 'em fins - but look at the images and tell me these aren't wings

I was at a lil' museum/sea life tour and thought I share these images with you.

Kind regards,
Th.

[selvin]

Th,
From a aerodynamic standpoint, fins are the equivalent of wings except for use in a different fluid (air is a fluid).
Good out of the box thinking.
Aloha