It is very likely that some fishers have discovered(and passed around by word-of-mouth) that after hauling someone who has met the bad end of a Chordarta out of the ocean, it's best to submerge the wounded limb in water as hot as the individual can stand, maybe hotter; repeat this process until numbness has completely subsided. This also helps to deal with the pain as feeling returns.

Drowsiness may persist a little, but that too will pass after a good rest once all feeling has returned.

If left as is, however, the numbness will spread from the initial injured limb and can result in a slow but painless death. Eventual drowning if remaining in the water goes without saying.