Yes like the other person said leeches are most likely
I would answer but you didn't put any pictures so I can't see what shows anything.
Answer: C) a tube of cartilage (surrounding the notochord) with dorsal projections on both sides of the spinal cord.
Explanation:
The hagfish has a skeleton which do not consists of bones instead it consists of cartilage. The cartilage forms the part of the tentacles, tongue, nasopharyngeal duct, and soft palate. The tube of cartilage forms the surrounding of the notochord. It also has an attach with the dorsal projections on both sides of the spinal cord.
I mean a parent would get worried at an injury but head and spinal injuries can be very serious and sometimes hard to catch. Like brain bleeds and etc
