giant sea jelly beans?

No, in fact hey are the "egg sacs of predatory sand snails, either the conical sand snail (Polinices conicus) or the moon snail (Polinices sordidus)" and "The snails are only a quarter of the size of their egg sacs, which are produced under incredible pressure inside the snail's shell and then expelled in a single, explosive laying." Would love to see that happen. Identified via Facebook by Michelle in Tassie, and further details from "Alex Marr, self-proclaimed "historian, nerd, idiot" on quora"