Dragons are creatures with nearly unlimited life spans. They can survive for long periods of time, and no one has found a dragon that has died of old age. Adolescence is usually marked by the growth of a hatchling's wings, although not all breeds of dragons grow wings and some breeds have other traits that indicate the beginning of maturation. Once they hit adolescence, hatchlings change quickly, maturing to their full forms in only 2 years.

Dragons don't communicate with each other verbally, but they will growl to scare off predators and frighten prey. Young dragons will emit an extremely high-pitched squeal when they are frightened. To communicate, they use telepathy with each other and to speak to other creatures.

When Water dragons mature, they lose the ability to survive on land, entering the water permanently. They are adept swimmers and eat whatever fish are in the lake they live in. They tend to inhabit the same lake for their entire lives, although a few live in the ocean and swim all over the world.

Aqune is calm as a a lake on a windless day. It is rare to ever see him upset or panicked, although it does happen. Examples include the time his mate, Magefem, laid her first egg, and when another egg of theirs was abandoned and killed shortly after.

He and the children of his that are water dragons like him are in charge of protecting the pool of water from which Thornstar's dragons drink and looking after water dragon hatchlings. Magefem is usually the protector of eggs and hatchlings, but water dragons need to be in water to live, so she turned the duty of watching them over to her mate.