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Written by Azmina Hossain The crown-of-thorns is a venomous starfish that lives in the Great Barrier Reef. Growing up to massive lengths of 80 centimetres and having a body entirely covered in toxic spikes, the starfish is almost indestructible and is a vicious predator. They eat coral, the building blocks of the Great Barrier Reef….

Written by Beth Askham Sometimes smelling like your environment is the best way to blend in and hide from predators. On the Great Barrier Reef, the harlequin filefish shelters in coral branches overnight. Researchers have found that these fish not only look like coral, they smell like it too.

Written by Michele Weber Coral reefs have much in common with rainforests: both are full of life, but are low in nutrients. How is that possible? As far as a coral reef goes, it’s because marine sponges produce waste that contains food that other reef animals can eat.