Off beaten track

Shards of living glass Dive any reef or wreck in Colombo and you will see them. Small shoals of shining glass fish, shining that is when the light hits them. They blink in and out of existence as the light hits them for a kaleidoscopic experience that is sometimes unreal, especially when they congregate in a huge shoal that engulfs you and surrounds you in small shards of sunlight. Glass fish on a reef Glass fish and cardinal fish on the Cargo wreck Usually the glass fish aren�t so spectacular, they hang around in a group of about a dozen close to any sort of crevasse on the reef or �caves� formed on wrecks by the structure of the sunken ship. Presumably they do this for shelter with a place to retreat to if a predator attacks. What they don�t seem to realize is that their shelter is most often where the attack is launched from. You don�t have to look too closely at the crevacess and cracks to see them. The groupers lie there innocuously, seemingly somnambulant. Blue line groupers are ...

The now familiar outline of the Medhafaru wreck appeared out of the blue-green waters, the bridge tilted at a Pisa like angle with the glass still intact though black with algae. DJ moved off to the front of the wreck as I stayed at the back, my more conservative Suunto demanding that I remained relatively shallow for our second dive of the day. One of the regular denizens of the wreck, a greenish yellow moray, a species we still have not been able to identify, poked its head out a small structure on the deck. It stared out, clenching its jaws repeatedly, as all morays are prone to doing. This does give these eels quite a vicious look especially with their jagged teeth but apparently all this gulping is just to help circulate water over their gills. It�s still not advisable to go sticking any body parts you are fond of near a moray; in fact that�s a good general rule with pretty much any animal. Best to stay clear of those teeth Unfortunately I was experiencing some issues with my came...

Is generally all you have at 36 meters before your bottom time runs out. At 36 meters you are under 3.5 atmospheres of pressure. This means that your ears will pop like crazy as you descend and more importantly you will use your air correspondingly quicker. Your bloodstram also will absorb nitrogen faster at greater depths, and you become saturated with nitrogen (for a super analogy check here . Coming up too quickly in such a situation will cause the nitrogen to bubble out of your blood stream like a coke bottle with its top removed. This is mildly unpleasant to say the least, leading to the dreaded �bends.� Bubbles in the brain, not a good thing The combination of faster air consumption and nitrogen saturation means going into decompression on deep dives is especially dangerous as you run the risk of breathing your tank dry during an extended decompression stop. For the uninitiated this is the period of time you spend hanging at around 3-4 meters of water while the absorbed nitrogen ...

EFL's 30th Anniversary lecture series which began on Thursday 24 November continues for the next 3 consecutive Thursdays. More details on the flier below and you can reserve your seat by calling the number on there. The Marine one should be interesting!

When a person sits down to a fish curry or a portion of fish and chips, they rarely think of where that fish comes from. We rarely realize that when we consume fish, we are eating the last truly wild caught meat on the planet, our ancient role as hunters reprised in the role of modern day fishermen. Of course the new age fishermen are a far cry from what they were centuries or even decades ago. With engines, mechanization, longlines that stretch for kilometers with thousands of hooks and nets that could engulf the Empire State Building, the fisheries industry has become almost unrecognizable as has sadly our oceans, rapidly depleted and overfished what we see in our seas now appears to be but a sad remnant of the abundance that was there decades ago. Our surface interval chats with Uncle Sumathi used to really bring this home, 56 years old, he had seen foreign trawlers come and rape the seas off Colombo, taking so much fish that the numbers have never recovered. Apparently the local f...

One of my favourite spectacles underwater are the �bait balls,� conglomerations of small fish grouping together, tightly packed for protection from predators. These are especially common on the Cargo Wreck where thousands of fusiliers (Caesionidae) can be seen often in amorphous fluidity. Not exactly a bait ball, but a shoal of fusiliers heading past. Close up they are quite a beautiful fish They are especially prolific when there�s a bit of a current and some plankton in the water and while fascinating to watch by themselves, the action really starts when a few Bonito show up. These medium size tuna hunt in small packs of five to eight fish and are capable of simply jaw-dropping bursts of speed. There is nothing that can compare to the adrenaline rush you get watching these in action. I�d only seen these fish dead on a block of ice at a supermarket before I started diving so the speed and agility which these fish displayed was mind-blowing (I�m of course rapidly running out of super...

Most definitely the clowns of the underwater world. Wikipedia rather boringly describes them as 'strictly tropical, perciform marine fish of the family Cirrhitidae.' Well yes that does explain their taxonomy but rest assured Hawkfish are fish with attitude. Who are you looking at? Hawkfish don't back down easily   There is one species that we come across (I think, as I am no expert in identifying fish) on our dives off Colombo and that is the Pixy Hawfish (Cirrhitichthys oxycephalus). This also appears to come in two flavours, the usual spotted kind and a more solid colour morph which is sort of orange with faint spots to be seen sometimes. You will often see them perched amongst corals or a parts of a ship, looking out like a lord looking over its domain. Apparently this habit of superciliously peering around is what inspired their common name, 'hawkfish.' The spotted version of the Pixy Hawkfish doing what it does best, hawking I used to see these fish quite freq...