but as dawn breaks on day six, they get some hopeful news. >> so, last night we have a reported sighting of a blue whale about 40 miles south of here. so, we're surveying this area, moving southwards to try to locate that animal. >> it's a long shot. if the whale is on the move, it could be traveling at over 20 miles per hour, twice as fast as this boat. six hours later, still nothing. drone operator ceci barrios is feeling the pressure. >> there's so much at stake. we've spent so many days looking for them. and if we don't find it, we