Now in its 5th year the Underwater Photography Competition returns with the theme 'Wonder: Sustaining what sustains us', in line with World Oceans Day 2025.
Photographers and videographers of all ages and skills were invited to capture the beauty of our 5 aquatic reserves on the Northern Beaches through the power of visual storytelling.
With a prize pool of $4,000 the winners of the competition will be announced in November.
People's Choice voting now open
Help to decide the winner of the People's Choice Award.
Scroll down to choose your favourite photo from our list of finalists. Voting closes Sunday 21 September, midnight.
You don't have to register - just click on the thumb up symbol underneath your favourite.
Anyone can vote, but it's limited to one vote per person. If you do assign a new vote, the previous one is removed.