North Sea

The Houting fish, believed to have vanished from our waters, has made an unexpected return. Previously listed as 'extinct' on the IUCN Red List of Species, recent research has unveiled that this fish is not only thriving but is also not a distinct species as once thought.

The initial classification of its extinction was centred on morphological differences, especially the number of gill rakers. However, a detailed study published on bmcecolevol.biomedcentral.com contradicts this.

The V-1302 John Mahn was a fishing trawler requisitioned by the German navy during the Second World War and sunk by UK bombers in 1942. It has rested at 30 metres below sea level in the Belgian North Sea ever since.

Together with the Royal Belgian Institute of Natural Sciences, bio-engineer Josefien Van Landuyt examined samples of sediment in the area around the sunken John Mahn. In doing so, she aimed to discover whether old shipwrecks in the Belgian section of the North Sea continue to affect microbial marine life.

Statnett, the Norwegian state-owned power grid operator, made the astounding discovery of the lost Karlsruhe cruiser around 488 meters (1,600 feet) below sea level off the Southern coast of Norway, some 13 nautical miles from the port of Kristiansand. Signs of wreckage were first detected three years ago during inspection work when sonar detected a shipwreck only 15 meters from an undersea power cable between Norway and Denmark.

From Churchill's blockships dotted along the rugged coastline, to dramatic battleships, the wrecks of Scapa Flow continue to fascinate and enthrall divers.

Many years of restraint and restrictive fishing quotas seem to finally have paid off. Within a decade the stocks of spawning cod have almost doubled

Though levels of cod in the North Sea are not yet what they were pre-crisis, a remarkable recovery is well under way and advancing. Along with cod and plaice stocks of herring, haddock, hake, Norway lobster, common dab and witch (Torbay sole) are also improving .