Take the jelly-like tissue. It’s a highly versatile biological product, but it certainly wasn’t arrived at via standard evolution. Like the worms, it’s there for a purpose - to control other living creatures by invading their neural networks. It’s somehow affecting the behaviour of live whales. The crabs and lobsters are a slightly different story. The jelly steers their movements, but they’re not actually alive. They’re empty shells with incomplete nervous systems - organic spacesuits for the journey on to land.’
