"These include the likes of blacktips, sand tigers and hammerheads, which are currently found swimming off the coasts of Spain and Portugal." He added: "Though while the potential number of shark species around the UK may increase in the next few decades, the overall number of sharks, especially the larger ones, will fall as a result of over-fishing
, plastic waste and climate change.
Decades of over-fishing
led to a huge depletion in stocks, with the fish being harvested at a much faster rate than they could reproduce.
is one of three major challenges facing the oceans, along with pollution and global warming which leads to rising acid levels.
Study suggests that climate change, over-fishing
and mismanagement have reduced ocean's fish stocks by half since 1970
Later this month, governments are due to adopt new UN sustainable development goals, including ending over-fishing
and destructive fishing practices by 2020 and restoring stocks "in the shortest time feasible".
According to the public policy think-tank the Nautilus Institute for Security and Sustainability (NISS), the increase in piracy in Southeast Asia is attributed to a number of causes, including over-fishing
; poor maritime regulation; organized crime syndicates; widespread poverty; and politically motivated groups.
To prevent over-fishing
, Sulaiteen explained that the municipality has restricted the activity in the city and that violators are slapped with a fine ranging from Dh100-Dh500 if caught fishing in restricted areas or catching fingerlings, in collaboration with the Ministry of Environment and Water.
An expert of the international environment group Greenpeace, Mohamed Diame, has lamented the dangers of over-fishing
in the waters of the West African sub-region.
Marking the latest round in the battle over sustainable fishing, the EU has decided to throw all its weight behind stopping the archipelago, which only has a population of less than 50,000, from over-fishing
in a bid to protect stock.
However, others believe these increases are linked to factors such as pollution, over-fishing
and climate change."
For many stocks that are still over-exploited, the extent of over-fishing
had been reduced, said the researchers, whose findings are reported in the journal Current Biology.
Mr Fearnley-Whittingstall, who has won wide UK support for his battle against "discards", said in a statement: "It's fantastic news that MEPs voted for a strong discards ban and a legally-binding end to over-fishing