Sponge gardens, kelp forest and sea urchin barrens. Sydney’s coastal habitats are as diverse as the creatures that live there. Join us on a trip into Sydney’s amazing underwater world professionally guided by our guest, UNSW marine scientist, Dr John Turnbull.

Why do sea urchins sometimes wear shells and other small debris as hats? What is munching away on kelp and what how does cray weed manages to float upright in the water?

Our guest has all the answered. Listen in this week’s episode!

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