Blue dragon nudibranch (Glaucus atlanticus)
In Asian mythology dragons are often associated with water, and there are many sea animals that are named accordingly.
The blue dragon nudibranch is a kind of sea slug. Specimens have been found washed up on the shores of Australia, Africa and the south-east US, and recently they have been appearing along the eastern coast of India.
Rather than flying, this marine dragon floats on its back wherever the wind takes it. It travels on the surface tension of the water, using a bubble of air in its stomach for buoyancy. It evades predators by appearing silver to fish below and blue to birds above.
Up to 84 finger-like ‘cerata’ grow out from the sea slug’s body in feathery, wing-like projections. They contain weapons taken from the sea slug’s prey – the infamous Portugese Man o'War. This creature’s tentacles contain stinging cells that paralyse fish and deliver searing pain to unwary swimmers. The blue dragon eats the tentacles, and transfers the stinging cells to specialised pouches for its own defence.
(Source)
For teaching: Marine science









