In isolated locations without the industry or population required to support medical facilities equipped to deal with dive related emergencies, in-water recompression (IWR) becomes an attractive prospect for dealing with decompression sickness, and a hotly debated issue.
Stingrays are frequently considered dangerous or threatening but largely without cause. These are shy fish that generally present no threat to divers unless stepped on or deliberately antagonized. Most stingray injuries occur in shallow water when beachgoers step on the animals. Stingrays can vary in size from just a few inches to more than six feet wide and have a serrated barb at the end of their tails that can cause serious injuries. At the base of the barb are two venomous glands that can cause infections and exacerbate an initial penetrating wound.
Today, the wreck of the Italian Regia Marina submarine Scirè lies at a depth of 33m in Haifa Bay and four IANTD expeditions were necessary to survey the wreck, collect measurements for a 3D reconstruction and accomplish historical, cultural and scientific research.
“At the present moment in time, we cannot reliably gauge whether a trade fair can be implemented in January 2021. This is due to current infection rates, ongoing travel restrictions and existing legal provisions which do not permit trade fairs to be held currently. In consultation with our boot advisory board and the associations we have selected the new dates in April with caution," Messe Düsseldorf’s CEO Wolfram Diener writes in a press release.
From October to November of 2020, the Japan National Tourism Organization (JNTO) held its second annual Japan Underwater Photo Contest, seeking photos taken by divers that showcase the undiscovered beauty and artistry of diving in Japan to the world.
Research jointly conducted by The Swire Institute of Marine Science (SWIMS), Faculty of Science, The University of Hong Kong (HKU), and The Nature Conservancy (TNC) emphasises the importance of oyster reefs in mitigating some problems associated with coastal development, like storm-surge damage and biodiversity loss.
Fakarava is an atoll in the Tuamotu archipelago located about 440km northeast of Tahiti in French Polynesia. Pierre Constant takes us on a journey to the pristine lagoons of Tuamotu and describes what awaits adventurous divers in its underwater realm.
Most of these sounds were measured at more than 21 kHz, which is beyond the range of human hearing of 20 to 20,000 hertz. A particular high-pitched whistle came in at 49.8 kHz. When the seals harmonised multiple tones, the resultant sound may exceed 200 kHz, which is beyond what even cats and dogs can hear).
The discovery was the subject of a paper published online in the journal The Journal of the Acoustical Society of America.
About 13 hours later, at 4:40 pm, three submarines—Щ-205, Щ-206 and Щ-209 (Щ is short for Щука or shuka, which means pike in Russian)—received approval from the Kremlin to move towards the eastern shores of the Black Sea, while the M-33 and M-34 left for long-range patrol near the main base. It was the first day of the war in the Black Sea.
Called "active displacement" of fish, this behaviour usually takes place during collaborative hunting efforts that both the octopus and fish engage in.
In such a situation with multiple parties, a complex network is created where investment and payoff can be unbalanced, and this gives rise to partner control mechanism, said marine biologist Eduardo Sampaio from the University of Lisbon in Portugal. A paper on this behaviour was published in the Ecology journal.
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The image-editing software Pixelmator Pro 2.0 (code name: “Junipero”) is designed as a universal app that supports the new Apple M1 processor. Intel CPU systems are supported as well.
