They might have been yelling “BRUUUUUUCE”. It confused me when I watched one of Springsteen’s old concerts and thought the crowd was booing him.

In case anyone wants more adorable hamster pictures, the hamster’s name is Sukeroku by the artist Gotte.

Main site

Compilation

Maybe a compass jellyfish?

“Translucent yellowish-white jellyfish with brown markings around the fringe and on the top of the bell. Those atop the bell resemble a compass, with V shapes radiating out from a central point.”

“Common off Southern and Western coasts of Britain in summer months.”