By Rita Sobot & Milo Boyd Holidaymakers may find themselves covered in slimy gunk at a popular Spanish resort. Holiday resorts across the Costa del Sol are pleading for help from the Spanish government to clear a “jacket of sludge” from its famous beaches. Popular locations such as Marbella, Estepona and Puerto Banus are battling against a mountain of invasive algae which green campaigners say is good for the environment but does not appear or smell overly pleasant. Workers at the resorts have spent the last few weeks clearing tons of “Rugulopteryx okamurae” which has formed a massive barrier …