The Great Barrier Reef is home to six of the world's seven sea turtle species.
Turtle hatchlings weigh only 15-30 grams at birth and measure 5-7 centimetres on average.
A fully grown leatherback turtle can reach a length of 2 metres and weigh up to 900 kg.
At the other end of the scale, olive ridley turtles grow to a length of 1 metres, but weigh in at a humble 45 kilos.
The estimated lifespan of sea turtles range from 60-80 years. Rock on, dude!
All turtles are omnivores, meaning they eat what they can. Favourite staples include sea grass and jellyfish.
Turtle timeline: November - turtle nesting season starts | December - turtle nesting season in full swing | January - baby turtles start to hatch | February - hatching is in full swing | March - hatching season comes to a close.
Baby turtles take 6-8 weeks to hatch and the sex is determined by the temperature of the nest. Warmer sand means more females and cooler sand means boys.
Only 1 in a 1000 turtles survive to maturity.
Baby turtles spend 20-30 years riding the ocean currents before returning to their birthplace to nest. Where they go is still a mystery.
Scientists believe turtles have the ability to use the earth's magnetic field as an internal GPS to find their way back home.
The top side of a turtle's shell is called the carapace. It's made up of 60 different bones and plates that give the shell incredible strength and protection.
Humans pose a significant threat to the world's turtle population. Six of the world's seven species are endangered as a direct result of human impact.
Turtles often mistake plastic bags for jellyfish. Since they lack mammalian reflexes, feeding on plastic will block up the airway system and cause a slow and painful death.