What? Don't tell me they're still using gramophones in the deep sea?
Heterochone calyx is a kind of deep sea Glass Sponge. It looks like the result of bullying in a pottery class. Some guy just prodded it with his fingers over and over again and now it's ruined.
It can reach over a metre (3 feet) across so a witch could actually cook up a couple of children in there. Maybe I was a little hasty in calling that guy a bully?
Like any sponge, they filter tasty bacteria and other consumables from the water. Unlike most sponges, H. calyx also forms deep sea sponge reefs. Their dense, silica skeletons persist after death, forming an ideal substrate for yet more sponges.
Take that one gramophone and turn it into five. It's called progress.