In a span of 12 days, endurance swimmer Lewis Pugh swam 58 miles around Martha’s Vineyard to change the public perception about sharks.

The sighting was around 9 a.m., according to The Trustees of Reservations, which manages the refuge, and swimming was restricted for two hours.

Greg Skomal, former lead scientist of the Massachusetts Fisheries’ Martha’s Vineyard station, has detected, inspected, dissected and protected just about every species of shark in the North Atlantic.

Renowned marine biologist Greg Skomal explores the complex relationship between humans and sharks in his new book Chasing Shadows: My Life Tracking the Great White Shark. Mr. Skomal’s passion was born in 1968 when, at six years old, he watched The Undersea World of Jacques Cousteau.

The fin of a porbeagle shark spotted in the Vineyard Haven harbor drew a crowd of amazed onlookers Friday afternoon.

It's hammer time!

A trio of shark sightings near South Beach has pulled swimmers out of the water over the last few days.

A 393-pound thresher shark was caught on Friday in waters south of the Vineyard. The fish, caught by Allen Bradley of Weatherfield Conn., was a record breaker for that species in the 14th annual Oak Bluffs Monster Shark Tournament.

A total of 82 boats from all along the Eastern Seaboard showed up for two intense days of fishing. They started fishing early in the morning and quit by 3:30 p.m. Most of the boats were home by late afternoon.

A huge 454-pound blue shark was caught during the tenth annual Oak Bluffs Monster Shark Tournament held over the weekend. The shark could be the largest blue ever caught, a world record.

The shark was caught by Pete Bergin of Shrewsbury in his boat Quality Time. Mr. Bergin's boat was one of 65 participating in the Boston Big Game Fishing Club's annual event. Competing boats filled the Oak Bluffs waterfront for most of the weekend. On Friday and Saturday a large number of fish were caught, and even more were released.