SPOKE WITH A RESEARCH ASSISTANT FROM THE NEW ENGLAND AQUARIUM ABOUT IT. >> A FREAKING KILLER WHERE BESIDE THE BOAT. -- KILLER WHALE. KATIE: VIDEO COMING IN OF WHAT MARINE OFFICIALS SAY IS IN OR BECAUSE SPOTTED OFF THE COAST OF CAPE COD. THIS VIDEO SHOWS THE LARGE MARINE ANIMAL SWIMMING ALONGSIDE HIS BOAT. >> YOU DON’T SEE THIS ERYVE DAY, FOLKS. AT LEAST NOT IN NEW ENGLAND. KATIE: SCIENTISTS AT THE NEWAGEN AQUARIUM SAY WHILE THEY ARE MOST FREQUENTLY SPOTTED IN WATERS OFF THE WEST COAST, OR BECAUSE HAVE BEEN SPOTTED OFF THE COAST OF CAPE CO. >> IT IS POSSIBLE BUT IT IS RARE AND VERY COOL TO SEE. KATIE: ON THE SAME DATE THIS VIDEO WAS TAKEN ANOTHER FISHERMEN SPOTTED AN OARCFF O THE COAST, SNAPPING THESE PHOTOS. >> I LOOKED OUT AND THERE IT WAS, AT THREE OR FOUR FOOT DORSAL FIN AND HE WAS JUMPING, SURFACING AND SPOUTING, SWINGING ALONGSIDE A BUNCH OF DOLPHINS. KATIE: OFFICIALS SAY THE SAME SOLITARY MAIL ORCA AND POSSIBLY OLD TOM, A NORCO WHO HAS BEEN SPOTTED ALONE SEVERAL TIMES IN THE BAY OF FUNDY. OR GHOST LIKE MANY WHALES AND DOLPHINS ARE IDENTIFIED BY THEIR MARKINGS. >> SOMETIMES IT HAS TO DO WITH BLACKND A WHITE MARKINGS, SOMETIMES IT IS SCARS. THIS PARTICULAR MAIL HAS A LITTLE NOTCH IN ITS DORSAL FIN TOWARD THE TOP AND THAT’S HOW PEOPLE CAN RECOGNIZET. I KATIE: OFFICIALS AT THE NEW EN ANGLD AQUARIUM TELL US IT IS TOO EARLY TO TELL AND JUST TOO UNCLEAR IF THE ORCA SPOTTED WAS IN