mad-as-a-marine-biologist:

Leatherback Sea Turtle (Dermochelys coriacea) esophagi. *Shudders*

I want to tell you about how my nightmares from now on will have me stuck in a room made out of Leatherback esophagi, but the conservationist in me wins:

Leatherbacks feed almost entirely on Jellyfish. Plastic bags floating in the water look like jellyfish. I can attest to this - having flapped in panic out of the way of a plastic bag on a dive, only to realise what it was, and check to see if any other divers saw my mistake, and then pick up the bag. 

Now imagine a plastic bag caught on those spines. That’s not going to dislodge easily. No, it’s more likely to cause suffocation and starvation. Ladies and Gentlemen, this is not our nightmare. It’s theirs. And it’s come true.