When something is bitten by a yellow-lipped sea krait, the venom affects the muscles and the nerves. The venom of a yellow-lipped sea krait is said to be 10 times more deadly than the venom of a rattlesnake. In a single bite, a yellow-lipped sea krait can give more than 12 times the venom needed to kill a human. They don't recognize humans as prey or predator so they avoid swimmers and divers and rarely bite them.