That's the only way I can describe what the dorsal surface of a moon jellyfish feels like. And if you've never handled a cow cornea, then... Firm, cartilaginous, a lot harder than you'd think.
Anyway, Dr. Grigg and I had an incredible dive this morning. We were surrounded by dozens of moon jellies. She showed me how to pet them without being stung and took some photos at my request.
I've said it once and I'll say it again. My research is so awesome!!!