Seven dive computers compared

Dive Computers

We picked seven of the most popular computers that retail for under £250 (one is just over £250), and took them for a couple of days' diving off Land's End to find out. All of them performed remarkably well. We checked their settings before taking them into open water, but all of them could have been used straight out of the box. It was also good to report that, without exception, they had all been set to metric rather than imperial measurements. The main differences between the models are their algorithms. Some allow longer dives or are less conservative, depending on how you view things. Some cram as much information onto the display as possible, while others require you to push a button and activate a second display. All models have user-replaceable batteries and the majority come with screen protectors.

Via Dive Magazine

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British Columbia spear fishing trip write-up

1270828319 Thegang

I make a few dives with the spear gun and soon find myself drifting along the wall in the current. Some fish cross my path, but now that I am hunting, I don’t seem to find the fish as easily as usual. Maybe it’s the big gun at the end of my hand. Or that I’m not really a hunter yet and I haven’t learned to conceal my indecision about this new activity. At the end of one dive a small kelp greenling swims across my path. I follow him but do not shoot.

Via DeeperBlue

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Flamboyant Cuttlefish footage from Malaysia

The flamboyant cuttlefish is pretty small - about the length of a hand - but its intense colours and spearing proboscis make it utterly mesmerising. This vid does a great job of showing off its colours, even more so because it’s shot at night. Peetmeng, who shot the vid, also has some others, including a huge school of jacks surrounding him and his buddy at Sipadan.

Via DiveHappy

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Navy diver reaches 2000 feet

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Developed by OceanWorks International from Vancouver, British Columbia, the Hardsuit 2000 was designed to withstand underwater pressure at 2,000 feet. Current models have only been able to go down as far as 1,200 feet. “The suit worked incredibly,” said Jackson. “It did everything it was intended to do. I always heard that around 1,300 feet, the joints of the Hardsuit 2000 would work even better, and it worked exactly the way they said it would.” Meeting the Navy’s high safety requirements, the ADS suit was designed and acquired by the Navy to support submarine rescue.

Via Navy Newsstand

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Phuket builds underwater statue park

Sculptures We thought we'd seen everything, but oh no:

Phuket Diving Park, as the site is now known, features sculptures including Thai demons ( yak ), traditional decorative arches, a sala, two elephants and a giant pearl oyster. Over time they are expected to become artificial reefs, attracting a variety of sea life.

Via Asia Dive Site

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Diving Oil Rig Grace

Oil Rig Grace

Oil platform Grace has had a checkered history and was the source of a large oil spill in it's early years. Now the company that owns it has opened it to divers for PR purposes and to publicize that environmentalists that want complete removal of the platforms are actually destroying large amounts of underwater habitat. It is covered in it's entire 320' depth with life of all kinds, is also home to sea lions and the occasional pelagic as it is in blue water. We did not see large amounts of fish, just a few Rockfish and smaller Greenlings.

Via Optical Ocean

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Underwater photography tips from New York Institute of Photography


The best time to take underwater photos is usually mid-day because the sun is overhead and will illuminate underwater subjects clearly. Rookie underwater photographers are often surprised how quickly light and color get lost as you plunge just a few feet below the surface. Most waterproof point-and-shoot models have a built-in flash and you'll want to use your flash anytime you're more than a few feet under the water.


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Jellyfish sting timed at 700ns

Jellyfish Sting

The sting of a jellyfish has been shown to be one of the fastest processes in the whole of biology. Using a super-fast camera technique German researchers have found it can fire off in just 700 nanoseconds.

Via The Register

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Leatherback walkabout - 5000 miles and counting


An astonishing 5,000-mile journey by the first giant turtle to be caught and tagged off the British Isles has excited scientists studying the endangered creatures. For eight months marine biologists have been tracking a 65st [413kg - Ed.] leatherback sea turtle that was caught off south-west Ireland last summer.

Via The Telegraph

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Diving in Tonaki-jima, Okinawa, Japan


We headed west off the dive boat (towards open sea) and followed the bottom until we reached a rock outcrop. There was some beautiful coral around there, along with some very big fish. The visibility here was even better than the first dive, which meant we could see a hell of a lot. We saw a small reefshark swimming close to us at one point, but after a little while it decided it was time for its lunch and headed away from us. But the prize of this dive was seeing a big turtle. It was sat on the bottom and must have been over a metre in length and width.

Via Big in Japan

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Dive the Maltese Islands

Malta Map

In Malta a dive is of exceptional quality - at 20, 30, 40m, every ripple could be spotted on the surface, and underwater life went on. Octopuses scurried over the reef. Morays with their ever-opening and closing jaws eyed us with suspicion, and grouper floated motionless, always about 4m away, and considered us with shy inquisitiveness.


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Diving Tioman Island, Malaysia

Pair Of Legs

The sixth dive was done at Chebeh, a rock formation a bit far away from the main island of Tioman. Went in at 1501hrs to a depth of 16.1m. Swam through the caves… literally understood what does it mean by "light at the end of the tunnel". The amount of corals and sea life in the caves were super diverse! Saw a huge school of "yellow striped" angel fish! It was super amazing to see them swimming out for the caves. There must be hundreds of them! Dotting their pretty colours on a beautiful landscape. =) Saw a yellow stripped stingray and a mantay ray and probably an eel too.

Via Faith Like A Child

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Guide to the Great Barrier Reef

Gbr Divephoto1

Divers are generally united around one thing: that the Great Barrier Reef in Australia is one of the finest places in the world to dive. That said, it's a hard place to reach (it's on the other side of the world after all), and once you get there finding the best places to go can be hard. The reef is big....really big..and stretches for literally thousands of miles up the coast. So how to you make sense of the place?

Via Gadling

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