Denham Jetty

Denham Jetty is a shore dive around two historic jetties in the town of Denham, on Shark Bay. The original recreational jetty is 100 m long and dates to 1906, and a newer one lies about 80 m to the north-west. Depth is about 6 m (20 ft), averaging closer to 4 m (13 ft), over a coral bottom.

The pylons are the heart of the dive. They gather marine life, and fish shelter in the shade of the old timber. Access is straight off the jetty, and the warm, sheltered gulf and shallow water make it a gentle, beginner-friendly dive.

Waves are usually only 0.5 to 0.8 m (2 to 3 ft) year round, so swell is rarely a problem. The main hazard is boat traffic, because this is a working bay and boats move above you, more so in good weather. Surface with care. Water peaks near 27°C (81°F) in summer and cools to about 17°C (63°F) in winter, and autumn, March to May, scores best.