The Atlantic White Shark Conservancy confirmed it was a sighting of Old Thom, the only orca regularly seen in North Atlantic ...

Seasoned commercial fisherman Donna Piraino and her husband were out fishing for blue-fin tuna when they noticed a pod of dolphins—then they saw a giant dorsal fin.

Legendary killer whale ‘Old Thom’ spotted, shark researchers deploy first-ever camera tag in Cape Cod Bay: ‘There he is!

Unlike most other orcas, the massive male known as "Old Thom" prefers to swim alone. The post Well-known orca ‘Old Thom’ spotted again in Mass. waters appeared first on Boston.com.