Australia, the great brown land down under, is home to many iconic and often strange-looking creatures, both above and below the water. But few are as unique and visually spectacular as the leafy seadragon!
This is the findings of a new study in Global Change Biology by the University of British Columbia. The reason for this future decline in size stems from the fact that fish are cold-blooded animals, and are thus unable to regulate their body temperatures.
“When their waters get warmer, their metabolism accelerates and they need more oxygen to sustain their body functions,” said co-author William Cheung, associate professor at the Institute for the Ocean and Fisheries and director of science for the Nippon Foundation-UBC Nereus Program.
This first standard is called "RTC Rebreather Diver Level 1," and it delineates a stage in a diver’s development where he or she is trained to dive with a rebreather to a maximum depth of 30m (100ft) with no planned stage decompression stops, and without supervision by an instructor or divemaster.
This standard will make it easier to compare certifications from different agencies, and is intended to be followed by others later.1
Bad Salzuflen, July 2017. In cooperation with Stuart Cove, the Cayago AG introduces a very special adventure in the Bahamas. Shark diving with the Seabob. The number one provider of shark-diving adventures now offers this new experience to diving enthusiasts from around the world.
Not all equipment are created equal but for different purposes and users. Consider the two iconic German cars below.
Which one is the best, which one is the better design?
The Mercedes with its advanced technology, high performance and superior handling? Or the rugged and uncomplicated VW Beetle of which more that 21 million were sold and is the longest-running and most-manufactured car ever made?
You must walk before you can run, so why do so few dive centres teach people how to swim before they learn to dive?
By adding divers to our underwater photos, we are able to bring about a sense of exploration, highlight a focal point and provide a sense of scale to the scene, especially in wide angle reef and shipwreck photography.
Researchers at the University of British Columbia (UBC) discovered that some fish have learnt to stay within marine reserves where they are safe from fishing, demonstrating the importance of such facilities. They made the discovery after modelling the movements of skipjack and bluefin tuna and great white sharks in the ocean.
One of the things close to everyone’s thoughts is diver safety. We spend good money on quality dive gear and prudently have it frequently serviced and maintained, as this equipment will be sustaining our lives while underwater. But what about when we are on the surface? Just how many of us really do think about getting lost at sea?
The pursuit of unusual and compelling photo opportunities has led me on some interesting journeys over the last few years, but few come close to the raw excitement of photographing the American crocodiles of Mexico’s Banco Chinchorro!
Like a fashion model up on the catwalk, great hammerhead sharks sashay into one’s field of vision, and, if they were human, you would probably say they have just “made an entrance”. Their strange mallet-like head, robust body girth and tall sickle-shaped dorsal fin make them well-nigh instantly recognisable, and most other sharks in the immediate area spot that too and give them a wide berth.
Whether as enjoyment at the beach or adventuresome change on a yacht – the Seabob offers plenty of fun in the water. Thanks to the simple and intuitive operation through two control grips, anyone can start riding a Seabob right away and can cruise through the water at 20km/h. While you glide along noiselessly, you can also explore the world underwater with this high-performance sea toy.
