In his book Sapiens: A Brief History of Humankind, historian Yuval Noah Harari traces the path left by Homo sapiens as our species spread over the world, causing the extinction of other human species and sub-species, and half of the planet’s big beasts. He describes the extinctions as happening in three waves.
This month's discoveries came after weeks of searching by crew members based on the research vessel Petrel. The vessel is owned by Vulcan Inc, a company created by the late Microsoft co-founder Paul Allen.
One ship, the Kaga, was discovered last week, while wreckage from another carrier, Akagi, was found on Sunday, Vulcan Inc. said in a press release.
"Every shipwreck we find reminds us all of the ultimate sacrifice made by those who served their countries," said Robert Kraft, Vulcan Inc.'s director of undersea operations, in a press release. "Our team is truly honored to have discovered the Japanese Flagship Carrier, Akagi."
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A report on social media stated that the 55-year-old diver was ascending from a 91.5m (300ft) solo rebreather dive in Bonaire, and was found unresponsive on the reef at 24m (80ft) with the loop out of her mouth. (It is not known whether she had planned to dive to that depth or not). She was brought to the surface and medivaced. She did not regain consciousness. It is thought that all of her equipment was recovered. Her Inspiration rebreather head has already been downloaded for analysis. At the time of writing this piece, it is not known what happened.
An ardent diver is a real kit monster.
An ardent diver is a real kit monster.
Scientists from the Field Museum in Chicago, USA recently discovered that Pacific warty octopuses don’t all have the same appearance, nor do they all live at the same ocean depth.
Their findings, which was published in the Bulletin of Marine Science, indicated that the bumpier the octopus’ skin was, the deeper in the ocean they would be found.
In their research, the team examined 50 Pacific warty octopuses from the Northeast Pacific Ocean, as well as specimens from the University of Miami Marine Laboratory and the California Academy of Sciences.
Tampa, Fla. (October 8, 2019) – As part of its long tradition of recognizing excellence and leadership in the dive industry, the National Association of Underwater Instructors (NAUI Worldwide) membership has selected official NAUI award recipients for 2019. Recipients are to be formally announced and honored Thursday, Nov. 14 during the DEMA Show in Orlando, Florida.
To successfully conserve and restore manatee populations, scientists need to know how many of them there are in a specific habitat. This isn’t always easy to find out, particularly in the Bocas del Toro province in Panama, where Antillean manatees live in turbid brackish waters, covered by thick aquatic vegetation.
Other methods, like aerial and sonar surveys, and infrared cameras, present logistical challenges and can be costly.
“Long dives, no pain” was the main reason for me to learn this configuration. I have been using sidemount for nine years now, and I still think it is the best approach to prevent the deterioration of one’s neck, shoulders and back.
