420 Dive Log Australasia OCTOBER 2026

The boring giant clam, Tridacna crocea, will burrow deep into cracks in the reef and may form dense colonies,

The Outer Reef

What lens do you put on the camera?

A macro lens makes perfect sense until a manta passes overhead.

At the southern end of the island, Yap Caverns offers another version of the reef. Here the outer reef reaches toward deep ocean before falling away. Long ago, sections of the wall collapsed, leaving great blocks of coral, pinnacles, gullies and canyons.

A wide-angle lens seems like the obvious choice until your guide finds something smaller than your thumbnail that you have never photographed before.

There is no correct answer.

The visibility can be extraordinary.

You choose.

Anthias hover above coral spires feeding in the current. When jacks rush them, thousands of tiny fish collapse into the reef at once. Seconds later they emerge and begin feeding again.

Then you live with it and return the next day with the other lens.

The red-banded prawn-goby, Amblyeleotris fasciata, is common in patches of coarse carbonate or volcanic sand. Occurs in pairs and burrow with a yellow species of prawn. Yap

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Dive Log Australasia #420 Oct’ 26

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