It's large, fan-like fins wave and flare like the skirts of a Flamenco dancer, revealing vibrant shades of rust and orange with flashes of royal blue as it hunts its prey under the cover of night. As beautiful as its dance may be, one prick from one of its long dorsal spines will inflict a very painful burning sensation.
Renowned diving physiologist Dr Neal W Pollock filmed a EUROTEK TEKTalk where he discussed the foundations of decompression physiology, M Values and what Gradient Factors are.
Pollock is the Research Director at Divers Alert Network (DAN) and a Research Associate at the Center for Hyperbaric Medicine and Environmental Physiology, Duke University Medical Center. Both positions are based in Durham, North Carolina.
Sweden's military has now analyzed the video footage provided by Swedish wreckhunter group Ocean X Team and concluded that it is the wreck of a Russian submarine that sank after a collision with a Swedish vessel in 1916 during the First World War. Ocean X was the team who also found the "Baltic anomali"
Artefacts on the wreck indicate it might date to the American Revolution. Amid the shipwreck’s broken remains are an iron chain, a pile of wooden ship timbers, red bricks (possibly from the ship cook’s hearth), glass bottles, an unglazed pottery jug, a metal compass, and another navigational instrument that might be an octant or sextant.
Many years of restraint and restrictive fishing quotas seem to finally have paid off. Within a decade the stocks of spawning cod have almost doubled
Though levels of cod in the North Sea are not yet what they were pre-crisis, a remarkable recovery is well under way and advancing. Along with cod and plaice stocks of herring, haddock, hake, Norway lobster, common dab and witch (Torbay sole) are also improving .
Throughout Rebreather Forum 3 experts from all fields - manufacturing, human interface design, accident analysis, rebreather training and diving - all advocated the use of checklists. The benefits of using this tool were highlighted to ensure that units are correctly built and pre-dive checks completed.
Yet, since 1987, Discovery Channel, owned by Discovery Communications, has presented 'Shark Week' each summer, deliberately using these important marine animals to create a horror show. Through special effects that dramatically present charging sharks, blood, and teeth, Shark Week falsely presents these varied and often very beautiful animals, as man-eating monsters.
On 2 July archaeologists surveying the waters off the island of Takashima confirmed a shipwreck found here is a vessel from a 13th-century Mongolian fleet that foundered in a typhoon in a failed attempt to invade Japan.
The recently discovered ship is estimated to have been 65 feet long and around 20 feet wide and was carrying 13th-century Chinese ceramics, as well as ironware that positively identified it as a ship belonging to one of the two doomed Mongol fleets. The two invasion attempts in 1274 and 1281 ended in vain as both fleets were destroyed in typhoons.
Researchers have discovered scleractinian corals that are brightly fluorescent at depths of 50–60 m. Many of them glow brightly with fluorescent colours, ranging from green over yellow to red. The encounter of such a rainbow of coral colours in deep waters was unexpected since their shallow-water counterparts in the same reef contain only green fluorescent pigments.
At the time of its sinking, Rio de Janeiro was carrying a contingent of German soldiers meant for the invasion of Norway, which occurred on the following day, 9 April 1940. Of the 380 onboard, 50 were crew, the rest were soldiers. Of these numbers, almost 200 lost their lives, but 183 survived and were helped by the locals. Survivors told officials they were heading to Bergen, and even though they were wearing military uniforms, the Norwegian government failed to realize that a German invasion was imminent.
Animals are endowed with the capacity to repair injuries. Some animals simply heal the wound, whereas others are able to regenerate lost parts.
A new study now documents yet another and previously unidentified strategy of self-repair, where moon jellyfish respond to injuries by reorganizing existing parts, and rebuilding essential body symmetry, important for them to stay balanced as they travel around the ocean, without regenerating what is lost.
To track the sharks over a long period of time, researchers fitted 20 males and 4 females with satellite tags. These tags sent information about an individual’s position when it came to the water surface.
