 Putting the aha in Ahab, our guest isn't an obsessed whaling captain. He's a scientist, but he has spent 30 years searching for the world's rarest whale. Now he believes he's found it and he could not be more excited. And swan for all and all for swan. It's the third week of July, which obviously means the swan census known as swan upping has begun on the River Thames. The swans may not love it, but the swan uppers are up for it.