Metro News: When samples were dragged up from the ocean to the deck of the Canadian Coast Guard ship Hudson in the past month, scientists found more than they bargained for. Kevin MacIsaac, a Dartmouth-based scientist, said some undiscovered sea creatures tagged along for the ride. They found 10 possibly brand new species of coral and sponges, as well as others that are new to this area. Some of the samples will give scientists a better understanding of the effects of climate change …