Great Australian Bight the site of nation's other great reef, where oil companies want to dril

Anchored in calm blue waters off Wedge Island Nature Reserve in the Great Australian Bight, a ship is approached by a pod of eight curious dolphins before they swim away.

The southern reef is estimated to generate
 $10 billion each year for the economy.

One hundred metres below us, a kelp garden teems with colourful life.

Hundreds of timid blue devils with electric blue spots duck for cover in rocky crevices.

Bright red harlequin fish, known as "Chinese lanterns" because of their distinctive colour and shape, amble across the sea floor.

Read the story from ABC News by Michael Slezak -  “Great Australian Bight the site of nation's other great reef, where oil companies want to drill.”