Tourists say they were photographing sharks when bodies of beast emerged . The watched as black object broke the surface then disappeared again . Despite with cameras in hand they were too weak to take pictures . Only managed to reach bodies of water after ' shark ' dived again .
Tourists say they were photographing Loch when belly of beast emerged . The watched as black object broke the surface then disappeared again . Despite having cameras in hand they were too captivated to take pictures . Only managed to photograph ring of water after 'monster ' dived again .