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NASA map of the Agulhas Current showing the levels of primary production during 2009. This is a measure of how much food was available for the spawning sardines. The KwaZulu-Natal sardine run of southern Africa occurs from May through July when billions of sardines – or more specifically the Southern African pilchard Sardinops sagax – spawn in the cool waters of the Agulhas Bank and move ...
On 1 November 2020, PADI Open Water Diver Linnea Rose Mills [1] drowned during a training dive in Lake McDonald in Glacier National Park, Montana, while using an unfamiliar and defective equipment configuration, with excessive weights, no functional dry suit inflation mechanism, and a buoyancy compensator too small to support the weights, which were not configured to be ditched in an emergency.
Underwater video is an scuba-based underwater sport governed by CMAS where teams of competitors using digital underwater video systems all dive at the same saltwater ocean sites at the same time over a two-day period. The submitted digital video are then assessed and ranked by a jury. [22] [23]
Sardine bait balls can be 10–20 metres (33–66 ft) in diameter and extend to a depth of 10 metres (33 ft). The bait balls are short-lived and seldom last longer than 10 minutes. However, bait balls are also conspicuous, and when schooling fish form a bait ball, they can draw the attention of many other predators.
In ambient pressure diving, the diver is directly exposed to the pressure of the surrounding water. The ambient pressure diver may dive on breath-hold or use breathing apparatus for scuba diving or surface-supplied diving, and the saturation diving technique reduces the risk of decompression sickness (DCS) after long-duration deep dives.
Image credits: historycoolkids The History Cool Kids Instagram account has amassed an impressive 1.5 million followers since its creation in 2016. But the page’s success will come as no surprise ...
The Aquanauts (later known as Malibu Run) is an American adventure/drama series that aired on CBS in the 1960–1961 season. The series stars Keith Larsen , Jeremy Slate and Ron Ely , who later replaced Larsen on midseason.
Drift diving is a type of scuba diving where a diver is transported by water movement caused by the tide, [1] an ocean current or in a river. The choice whether to drift dive depends on the purpose of the dive and whether there is an option.