Anyone see the mark on the shark in the 2nd season of Lost?

on the tail when sawyer and michael are in the water like on the small part of the raft and theres a shark in the water...if you see it on DVD or like with Tivo slow it down when it shows the shark underwater looking up and it has The Dharma Initiative mark on the underside towards the tail...anyone else notice this? Secondly, any speculations as to what this could mean?