US National Park Service: What are these weird creatures that washed up on the beach?

The US National Park Service found two of these weird creatures washed up on North Carolina's Cape Lookout National Seashore and is wondering what the hell they are.

"Our turtle patrol found them on the ocean side beach recently adjacent to a log covered in goose-neck barnacles (no idea if they are connected to the log or if its just a coincidence), they wrote on Facebook. — Read the rest