This porous cube found in the deep sea:
"Looks like one of these. In Dutch, it’s called kroonsteentje, but I don’t know what it’s called in English. It has something to do with electrical wiring."
"Terminal block' in English."
"Fun fact: ceramic terminals are designed to withstand fire and other high heat sources. Imagine a boat being on fire but just continuing to its location. That's what they're supposed to do!"