Barney and Gemma meet the sports stars of the sea - sprinters, jumpers and even gymnasts!
Barney and Gemma show that coral reefs are like our cities - and everyone has a job to do.
Barney and Gemma find there is a reason for the riot of colours in the reef's fishy world.
Barney Harwood and Gemma Hunt find creatures that travel amazing distances underwater.
Everyone needs a place to call their own, and the Barrier Reef gang is no different.
Simon Coral and Danni Mantaray search for creatures that have the fishy factor.
Barney Harwood and Gemma Hunt meet extreme recyclers in the Barrier Reef.
Barney Harwood and Gemma Hunt find out about family ties under the sea.
Barney and Gemma investigate creatures with super senses in the Barrier Reef.
Barney and Gemma meet walking sharks, hitchhiking shrimps and squids with jet propulsion.
Barney and Gemma find out what happens in the Great Barrier Reef in the hours of darkness.
Barney and Gemma meet deep diving dolphins and snorkelling trees in the Great Barrier Reef.
Barney Harwood and Gemma Hunt meet creatures with amazing eyesight in the Great Barrier Reef.
Barney Harwood and Gemma Hunt dive down under to discover yet more crazy connections in Australia's Great Barrier Reef, and meet some spineless fish friends.
Barney and Gemma meet bizarre, disgusting and hair-raising creatures on the Great Barrier Reef.
The ocean world is full of fishy friendships, but just like our world, some friends are better than others.
Meet the veggies and meat eaters, lone diners and pack hunters.
Meet the snottiest, slimiest and most gut-wrenching gang of the Barrier Reef.
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