Sea slug feast

Some nudibranchs (Mollusca, Gastropoda, Opistobranchia, Nudibranchia) are armed with stinging structures, called cnidocysts or nematocysts, which they steal from their cnidarian prey for their own defense. When the nudibranch eats a cnidarian, the unfired nematocysts are moved out to the dorsal, fingerlike structures on its back (the cerata), where they are stored in a sac, the so-called cnidosac (the bright white structure at the tips of the cerata) and remain fully functional. For protection, the nudibran