Incredible footage shows RNLI heroes rescuing a humpback whale - entangled in a lobster rope line. <br /><br />The large mammal with a distinctive white tail, which had been seen locally in Cornwall months before and named Ivy, had sadly become trapped in lobster pot lines in Mount's Bay, West Cornwall.<br /><br />Four rescuers from the RNLI managed to free the humpback whale after a rescue mission that took around 30 minutes on choppy seas.
