September in Bali: Underwater

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The diving at Nusa Lembongan and Nusa Penida was nothing short of beautiful.

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There was plenty of very healthy coral and every single dive was full of beautiful coral scapes, quite different from the black volcanic sands of Tulamben.

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I loved how blue the water was and how colourful the fish were. They were everywhere the eye could see, with the tiny brightly-hued anemonefish hovering on the roof, the slightly bigger ones like the butterflyfish close to the reef and the large ones like the trevally hunting a few metres from the reef.

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It wasn’t all blue underwater. Featherstars like these gave bursts of colour along the way. These creatures are relatives of the starfish and can walk themselves to convenient places to feed. I like how they congregated on this coral to pose for a picture.

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The fish closest to the reef are generally the smallest and naturally the most skittish because they are food for most other bigger fish. I had a hard time getting a picture of these two-tone dartfish that always come in pairs. I love how they look like they’re wearing frilly dark clown pants!

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Another skittish fish was this adorable juvenile yellow boxfish that was almost impossible to catch on camera without being a spotted yellow blur.

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Bigger and less shy, yet still hard to capture was the emperor angelfish. It had this knack of sailing off in a huffy imperial manner away from the camera.

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Also adopting a regal manner was the spotted soapfish. Again, I kept capturing the tails of these fellas till this one though no doubt it’s angled away in retreat.

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Less skittish fish are those that laze along the bottom of the reef, like this hexagon grouper. It perched itself on the coral and anemones, keeping a careful eye on nearby divers and moving away on if they got too close for comfort.

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Others didn’t bat an eyelid even when we got close for a shot, like this giant frogfish. All it did was occasionally shift its foot-like ventral fins to get to a more comfortable position.

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One fish that we daren’t get too close too was the scorpionfish. This specimen is probably either a tasseled or Poss’s scorpionfish, with its well developed skin tassels along its chin and jaw.

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Other things hardly moved at all, like this egg cowrie. Its black mantle covered most its smooth white shell whilst it fed on soft coral.

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Some creatures were actively out hunting, like this very cute snowflake moray eel. It had a most sheepish expression on its face that amused me to no end.

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There was also the banded sea snake, a highly venomous reptile that we steered clear off. From a distance, I admired its pretty bands of alternating black and pale blue, its smooth rounded head and its rudder-like tail that was well adapted to propelling itself in search of prey.

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Last of all was this pretty pinkĀ  nudibranch with an orange flower on its back. It’s actually a pink dorid and the flower is its branchial plume through which it breathes. I wonder why it was doubled over though.

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Even without the fish I was after, seeing the variety of life here was rewarding in its own right. More to come in my next post!

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Guest Post: DC Dives Redang – More Lessons and Funny Things

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For my introductory deep dive, Tim decided to make things a bit more interesting and took down a raw egg to show the effects of water pressure. On the surface, air pressure = 1 atm (atmospheres). For every 10 metres depth, the effect of the water pressing down on us increases by another 1 atm, so at 30 metres depth the pressure is 4 atm. What this means is that an egg, cracked at a deep enough depth, will retain its round yolky shape in the water. Like so.

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It was quite an interesting science lesson, and it was quite fun to bat the yolk ball back and forth between us. Unfortunately, we got a bit overenthusiastic and after a while the water pressure was unable to compete against the squishy strength of our hands. The yolk broke and made quite a mess in the water.

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Lesson over, we got round to some nice diving. One of my favourite photographic subjects are pufferfish. There was a nice specimen hugging the reef that day.

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It always cracks me up to see pufferfish. It’s hard to imagine funnier-looking fish. And if you ever imagined a football swimming through the water, that’s how they swim. We also came across a juvenile boxfish, which is part of the same family as the pufferfish. The poor little guy was petrified by us, and did its best to hide in the coral for protection. When he grows up, he isn’t going to be much bigger either!

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