On this #NationalPotatoDay, if your circle isn’t discussing the sea potato, it's time to find a new circle. 🥔 The sea potato is, shockingly, not really a potato, but actually a type of urchin that burrows in the sand. The urchin’s many furry-looking spines help it trap oxygen under the sand, while it uses its long tube feet to capture and feed on buried detritus. Yum! 📸 by Phil Champion, Wikimedia Commons