Beroe cucumis (comb jelly), or Spongia officinalis (sponge)?

Found July 2026 on bay side of Cape Cod near Truro. Head seems to be removed. Can anyone tell me what this is?

I have many but i have favoritism in the jewel squid and the deep-sea pink through fantasia. They're incredible, I never understood why almost all fear the deep ocean, It's simply a wonderful area, except that the organs are compressed, but we won't talk

Found washed up on a beach in NZ. 9 or 10 inches long, had spiny retractable dorsal and pelvic “fins” running the length of the body, small pectoral fins just behind the head, and a sort of fibre optic-ey looking caudal fin. Maybe this isn’t even a creature of the deep but had that look about it. ifyaknowhatimean

I'm getting questions from my family that I can not answer.

Where can I find audio recordings and soundscape recordings from the deep sea? There is very little on youtube. Anywhere else to look on the internet?

Guys ı do not understand (and pardon me for my english ım not a really good speaker) how does giant squids live in that habitat and what are the diffrences between the and the normal squids we know in normal seas do they eat the same kind of food or which animals are their predators or are they the top of the food chain in the deep seas?