May 2013

HMAS Sydney wreck to be filmed in HD

The battle between HMAS Sydney and German auxiliary cruiser Kormoran was a single ship action which resulted in the sinking of both ships

The half-hour long engagement occurred on 19 November 1941, during World War II, after the two ships encountered each other approximately 106 nmi (122 mi; 196 km) off Dirk Hartog Island, Western Australia. The exact location of the two wrecks remained unverified until 2008.

Poseidon MKVI 60M Upgrade

User can either upgrade their existing MKVI or purchase a new 60M-Enabled one.

New units will be available from August 15th, but the upgrade process can be started from June 1st.

Existing users upgrade by sending their E-module and battery to the local Poseidon Rebreather Center which will send them back to Poseidon Sweden for upgrade. The process should take about 4 weeks

Brown trout , Salmo trutta

GM salmon capable of breeding with wild trout

A genetically modified strain of Salmon which have been engineered with extra genes to make them grow more quickly, pass on this trait to the hybrid offspring, researchers from Memorial University of Newfoundland, Canada, has found.

In the wild, Atlantic salmon very occasionally mate with the brown trout, successfully producing offspring and the researchers found that in the laboratory, the genetically modified salmon could do the same.

Dusky shark (Carcharhinus obscurus)

Dusky shark one step closer to protection

A generalist apex predator, the dusky shark can be found from the coast to the outer continental shelf and adjacent pelagic waters, and has been recorded from a depth of 400 m (1,300 ft).

Populations migrate seasonally towards the poles in the summer and towards the equator in the winter, traveling hundreds to thousands of kilometers.

Gray whale

Gray whale makes first ever appearance in the Southern Hemisphere

The gray whale is distributed in an eastern North Pacific (North American) population and a critically endangered western North Pacific (Asian) population.

The gray whale was also found in the Atlantic in earlier times but disappeared from the European coast before and on the American coast around the late 17th to early 18th centuries.

However in 2010, a gray whale was sighted off the coast of Israel in the Mediterranean Sea, leading some scientists to think they might be repopulating old breeding grounds that have not been used for centuries.

Humpback whale with bubble net

Whales pass on knowledge

A team of researchers, led by the University of St Andrews, has discovered that a new feeding technique has quickly spread to 40 per cent of a humpback whale population. Humpbacks around the world herd shoals of prey by blowing bubbles underwater to produce 'bubble nets'.

The feeding innovation, called 'lobtail feeding', involves hitting the water with the tail before diving to produce the bubble nets. Lobtail feeding was first observed in 1980, after the stocks of herring, previously the main food for the whales, became depleted.