Around 50 migrants are feared to have drowned in waters off the Moroccan coast. The Spanish coastguard has saidthat rescue services managed to retrieve three exhausted and disorientated men from a half-sunk rubber dinghy near Spain's Alboran Island.<br/><br/>It is believed many more were originally on board. A coastguard spokeswoman said they had likely drowned, adding that rescuers were still surveying the water where the boat was found. <br/><br/>The survivors are aged between 17 and 25, and from sub-Saharan Africa. The coastguard said in a statement that the boat had been drifting for several days after leaving the northern coast of Morocco.