Galeommatoids are one of the most diverse and yet least known groups of clams. They can be free-living, commensal or parasitic, they can filter feed and some are carnivores that suck the bodily fluids of their prey! Many are brightly coloured and very active, like little nudibranchs

Please vote for this funky bivalve species to be the Mollusc of the Year 🥳. It's among a super-rich yet much understudied clade, Galeommatida, showing repeated evolution of parasitism (or free-livings 🤔) - a perfect system for understanding the ecology and evolution of symbiosis/parasitism 🤓.

🌙 Mysterious Moon clam for #IMOY 𝙀𝙥𝙝𝙞𝙥𝙥𝙤𝙙𝙤𝙣𝙩𝙖 𝙡𝙪𝙣𝙖𝙩𝙖 traded traditional shells for crescent-shaped "wings." It lives inside sponge galleries and shrimp burrows. Vote for the moon clam for International Mollusc of the Year: sgn.one/moty2026 @gotoryu.bsky.social @msshanhuang.bsky.social @sgn.one