July 8, 2011 - A spotter pilot saw a 12-15' great white shark off Chatham on Tuesday, July 5th. That brings to four the number of great whites that have been seen in the waters surrounding Cape Cod this season. The first sighting was May 6 by a fisherman who saw a shark estimated to be about 18 feet long off Martha’s Vineyard. Sightings were also reported on July 1st near Monomoy Island and July 2nd off Truro.
A recently released study of sharks tagged off Cape Cod last year found that one swam along the coast of Georgia, and another entered into the Gulf of Mexico.
Here's the fine print that goes with this ever more common Cape Cod story. Shark attacks on humans are very rare. The last fatality caused by a shark in Massachusetts took place at Hollywood Beach, Buzzards Bay in 1936. Beach goers are advised to pay attention to their surroundings, not to swim in areas where seals are known to congregate, not to swim alone or great distances from shore, and to avoid swimming at dawn and dusk, when most attacks occur.
Here's more from Boston.com.
December 7, 2010 - Cape Cod's turtle rescue season begins as air and water temps cool at the end of October and continues until the end of the year when water and shore become too cold to allow even the largest to survive. Most of the strandings take place along Cape Cod Bay beaches from Dennis to Truro where the geography of the Cape confounds the turtles' internal navigation system that tells them to head south. This year scientists and volunteers are finding unprecedented numbers of juvenile sea turtles, mostly Kemp’s Ridleys. They predict that this year will be one of the worst on record for turtle strandings. Already, more than 170 turtles have been found on the Cape. More than 100 volunteers comb Cape Cod’s beaches for turtles on virtually every high tide. This year they feel a deeper sense of mission because the BP oil spill in the Gulf of Mexico polluted estuaries and coastal bays where Kemp’s Ridleys live. Here's the full story from Beth Daley at 
December 6, 2010 - Conventional wisdom has it that white sharks don't like the taste of people. If they bite us by accident they - generally - spit us out. There's evidence to back this. Many attacks by white sharks are just that. One bite and that's it. But it may not be a matter of their taste buds. It may be about their jaws. Most of those attacks are made by adolescent white sharks in the process of learning what to hunt. According to a new study published in the Journal of Biomechanics adolescent jaws are too weak to capture and kill large marine mammals.
