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 their legs and 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.

A Serpentine Blue dragon, Sapphire's arrival was anticipated as a friend for a lonely Azulon, who has long since disappeared into the wilderness.  Sapphire spends most of her time under the lake feeding and exploring the many underwater caverns that serve as a sort of great mansion-like home.  She has a sweet and gentle demeanor and wants to make friends with everyone who passes by her lake home.  Sapphire never holds a superior or biased attitude for the other breeds, unlike many of the others.