Another adorable 'sea urchin' with a clear strike 'Otaru T' in a circle. The mark dates from the 1920's, applie…

Sea Urchin (class Echinoidea) – Our Wild World

Visiting Hokkaido, Japan, in Winter, Adventurous Kate

Keiko Tanabe - Blog: landscapes

Sea urchins: diadema urchin, Echinothrix diadema 1,2, Metalia spatagus, Echinus spatagus 3, pencil urchin, Cidaris species 5, edible sea urchin, Echinus esculentus 6, and large sea urchin 8. Handcoloured copperplate engraving after

Sea urchin - Wikipedia

File:Echinometra lucunter (red rock urchin) (San Salvador Island, Bahamas).jpg - Wikimedia Commons

Sea Urchins Test Scientists - Hakai Institute

Urchin Invasion Biology Article for Students

sea urchins protect themselves by putting rocks and shells on their heads so apparently if u give them tiny hats they will put them on and wear them : r/aww

CONNECT Magazine Japan #127 December 2023 by AJET Connect Magazine - Issuu