In the Mobjack Bay sea monster story, the main elements might start with the setting of Mobjack Bay. Then, the appearance of the sea monster is crucial. If it was described as having multiple heads or a scaly body, that would be an important part. Also, any interactions between the sea monster and humans or boats in the bay would be a significant element. For instance, if it was said to have chased a fishing boat or damaged a dock. And the way the story has been passed down over time, whether through oral tradition or written accounts in local history, is also an element that could shape the story as we might hear it today.
I'm not certain about the main elements specifically. But it might include the appearance of the monster, such as its size and shape.
The main elements could be the location, which is Mobjack Bay. Then there's the description of the sea monster itself. It might be said to be a large, dark shape in the water. There could also be elements about the people who claim to have seen it, like fishermen or sailors. Their reactions to seeing the so - called sea monster would also be part of the story, whether it was fear or just shock.