#scuba diving

One of the critter kings, frogfish (aka anglerfish) are often photographed for a number of reasons - their various contrasting colours, textures and camouflages, their incredible hunting tactics and of course their down-turned mouths and muppet-like faces. Of course, the fact that they remain absolutely motionless for 90% of the time also helps the happy-snappers. (Photograph: Richard Smith)

The gaping mouth-like orifice of a tunicate can provide temporary shelter
for other marine animals such as small fish. This little guy is in no
danger of becoming dinner, as the tunicate’s feeding filters couldn’t
absorb a meal of this size. (Photograph: Richard Smith)

Whip Coral Gobies have a transparent body with orange to golden marks and live exclusive on the sea whips, often in pairs. They rarely move, instead relying on their camouflage to keep them protected, which makes the patient Photographer able to approach closely and experiment. (Photograph: Frank Owens)

Xenia soft coral crab lives its life in between the polyps of some of the species of the pulsating Xenia soft corals. These are a great place to look for hidden gems on a night dive. There are shrimps, crabs, nudibranchs and even filefish that make this their home and have camouflage that make them both beautiful and hard to find. A little patience is needed to scour the small patches of corals for these animals but it’s worth the effort. These corals tend to be found in the shallows, as they contain microscopic algae within their cells that require the sun’s light in order to survive.  (Photograph: Richard Smith)

Some Opisthobranchs evolved with textures and colors that mimick surrounding plants to avoid predators. Others, as seen especially well on the nudibranchs chromodorids, have an intensely bright and contrasting color pattern that makes them especially conspicuous in their surroundings. This is believed to be an example of aposematic coloration; the shockingly bright coloration which warns potential predators that their prey-to-be is distasteful or poisonous. (Photograph: Eric Cheng)

夢幻泡影。

Submerged prehistoric archaeology: a view from the dredge barge.

On holiday: Dame Judi Dench and her late husband Michael Williams enjoy scuba diving on a family holiday in Cyprus in this 1980 photo