"The situation remains grave particularly in those areas of Somalia where access for most aid agencies remains severely restricted, " said Mr Gormley.

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Middleton's report also notes that Somalia's fishing industry has collapsed in the past 15 years, particularly as European, Asian and African ships increase their fishing in the area.

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In the wake of the most recent attack, Britain's Foreign Office changed its advice to tourists heading for Kenya, warning against "all but essential travel to coastal areas within 150km of the Kenya-Somalia border, " and cautioning that beachfront accommodation in the region is particularly vulnerable.

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Southern Somalia also received less humanitarian assistance in 2010 and much of 2011 than it had in previous years, particularly 2008 to 2009, the report said.

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