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Drone videos of gray whales off Oregon have revealed new details about how the marine mammals find food. The findings were described in studies this summer. Drone video of gray whales offers new ...
A Nikonos V amphibious camera Underwater housing for SLR with dome port, arms and lights. Some cameras are made for use underwater, including modern waterproof digital cameras. The first amphibious camera was the Calypso, reintroduced as the Nikonos in 1963. The Nikonos range was designed specifically for use underwater.
Whales evolved from land-living mammals, and must regularly surface to breathe air, although they can remain underwater for long periods of time. Some species, such as the sperm whale, can stay underwater for up to 90 minutes. [2] They have blowholes (modified nostrils) located on top of their heads, through which air is taken in and expelled.
Elephant seals stay at sea for between 2 and 8 months and dive continuously, spending 90% of their time underwater and averaging 20 minutes per dive with less than 3 minutes at the surface between dives. Their maximum dive duration is about 2 hours and they routinely feed at depths between 300 and 600 meters (980 and 1,970 feet), though they ...
In South Australia whales are watched in the Great Australian Bight Marine Park areas and closer to Adelaide at Victor Harbor. [37] In eastern Australia, whale watching occurs in many spots along the Pacific coast. From headlands, whales may often be seen making their migration south. At times, whales even make it into Sydney Harbour.
The regulation became necessary when the number of whales near the coast spiked after a marine heat wave from 2014 to 2018 apparently pushed their prey – such as sardines and anchovies ...
Early video cameras also needed large batteries because of the high power consumption of the system. Current Lithium-ion batteries have long run times with relatively light weight and low volume. Another problem is the lower level of light [15] underwater. Early cameras had problems with low light levels, were grainy, and did not record much ...
The stunned witnesses expressed their astonishment at the sight before them in the 25-second video. “That’s an experience we’ll never get again,” a man said. “Never,” another replied.
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