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

Sea urchin - Wikipedia

Sea Urchin (class Echinoidea) – Our Wild World

File:Sea Urchin- too close for a sharp picture (27823500751).jpg - Wikimedia Commons

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Sea urchin - Wikipedia

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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

Blog — Be Here