Sea Snakes
Sea snakes dive deep with their paddle-shaped tails and flattened bodies. For the most part, sea snakes don’t bite unless they’re provoked.
However, some species can be aggressive. Despite their name, they aren’t fully aquatic and don’t have gills. Due to this fact, they need to surface to breathe regularly.
Immortal.
This is a cool snake fact: since snakes shed their skin regularly, there are some cultures that regarded them as immortal beings. On top of that, snakes form circles and spirals with their bodies, which are symbols that are associated with immortality.