Battleship España
The battleship España has a very important place in the history of the Basque Country of northern Spain and is now a protected monument at the bottom of the sea.
The battleship España has a very important place in the history of the Basque Country of northern Spain and is now a protected monument at the bottom of the sea.
The 400-ton Russian submarine, commissioned in 1911, was the biggest in the pre-revolutionary Russian navy. During the first world war, she served in the Baltic Fleet making 16 patrols and unsuccessfully attacked the German coastal defence ship SMS Beowulf.
In November 1915 during her 17th patrol, she struck a mine and sank near Hiiumaa with the loss of all 35 seamen and came to rest at a depth of about 30 meters.
If fish and coral larvae opt to settle in coral-dominated areas instead of the degraded, seaweed-dominated reefs ecologists' efforts to restore reefs could become complicated.
With a series of experiments, a team of researchers led by Danielle Dixson from Georgia Institute of Technologyc ompared water from marine protected areas, where fishing is restricted and corals abound, to water from non-protected areas, where seaweed has largely replaced both corals and fish on the reefs.
Toadfish is the common name for a variety of species from several different families of fish which have a toad-like appearance in common. They are known for their ability to produce sound with their swim bladders.
The endless motor-like sounds are produced by their strong muscles pressing against their balloon-like bladders. They hit the bladder about 6,000 times a minute -- twice the speed of a hummingbird's wings -- and do it during a mating season that usually starts in May and ends in September. The loud hum can last for more than an hour at a time.
A multinational team of researcher utilized three types of satellite transmitting tags to track the movements of 47 whale sharks from 2009 through 2011. The tags, which are placed just below the dorsal fins, measure temperature, depth, and light levels of the waters the fish swim in. After several months, the tags pop off, float to the surface and beam data via the ARGO satellite system back to computers on shore.
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A case report documenting a fatal South Pacific shark attack suggests sharks may mistake recreational water users for birds. The report, published in the Journal of Forensic and Legal Medicine, theorizes kite surfers may be at risk for such confusion. The victim, a 15-year-old kite surfing male, died after being attacked by a tiger shark in New Caledonia.
According to CAS’s Matt Wandell the chamber is fairly simple in design and can bring a fish up to to surface pressure in around 20 hours or so without adverse effects.
Aside from burst swim bladders, fish, like humans, can also get decompression sickness when exposed to rapid changes in pressure during capture.
“Bent” fish are most likely widespread in the live reef fish trade, as most of the species that have been examined were found to suffer symptoms of decompression sickness after capture from shallow depths of 10 to 15 metres.
A new study in the journal Plos One has revealed blue whales assemble for long periods in the busy shipping lanes off California, raising concerns about collisions between vessels and the endangered cetaceans.
“It’s an unhappy coincidence,” said study leader Ladd Irvine, a marine mammal ecologist at Oregon State University. “The blue whales need to find the densest food supply. There’s a limited number of those dense places, and it seems as though two of the main regular spots are crossed by the shipping lanes.”
According to new research, offshore wind farms may become seal hunting grounds. Although the long-term environmental impact remains in question. Located offshore, wind farms are banks of wind turbines that harness the wind's energy to produce electricity.
Philippine Airlines (PAL) says it has stopped flying shark fin cargoes, joining a number of other Asia-Pacific carriers in taking a stand for marine conservation.
The fins are used in shark fin soup, a much-valued delicacy in Hong Kong and China.
Conservationists say booming demand for such fins has put pressure on the world's shark populations, prompting calls for measures to restrict their trade.