http://m.huffpost.com/uk/entry/7054800 A mass beaching of up to 150 dolphins on the Japanese coast has fuelled fears a powerful earthquake could be imminent.  Frantic efforts to save the melon-headed whales or blackfish – both species of dolphin - were in vain and most of the animals died on the shore of Ibaraki prefecture on Friday. The dolphins were wobbling and moving their fins as rescuers gently rubbed them. Though there is little scientific evidence of a link, some online commenters ha