Blue whales can grow over 30 metres long and weigh more than 150 tonnes, making them the largest animals ever to exist.
Some jellyfish species have existed for more than 500 million years—before dinosaurs even appeared.
The Great Barrier Reef in Queensland is so large it can be spotted from space.
Dolphins are highly intelligent and often engage in playful behaviour like leaping and surfing in waves.
Certain algae or plankton can create bioluminescent effects at night, causing the water to glow when disturbed.
Octopuses are incredibly clever, capable of solving puzzles, escaping tanks, and opening jars.
Whale sharks—despite being the largest fish—only eat tiny plankton and small fish, filtering the water through their massive mouths.
Some sea turtles travel thousands of kilometres across oceans to return to the same beach where they hatched, laying eggs for the next generation.
Clownfish live among anemone tentacles without getting stung, gaining shelter while helping the anemone stay clean.
Sharks continually replace lost teeth throughout their lifetimes, sometimes going through tens of thousands of teeth!
Far off the tropical coast of Queensland, the sun rose gently over the horizon, casting a brilliant gold path across a calm, turquoise sea. Beneath those sunlit waves stretched the Great Barrier Reef, an underwater realm teeming with vibrant corals...
