Some of the adaptations that the they made are they have webbed feet to swim in water.They also have long necks to be able to expand its neck to eat bigger things than its original sized neck.they have long nails to grip in the ground so that they can run faster to escape water ever makes harm to the monitor lizard.
The have a awesome resource as well they are able to use their super strong tail whip and kill a small animal.

One of their ancestor is the Megalania which was one of the most ginormous Goanna or monitor lizard.The size of this beAST was too hard for it to move fast so the settlers were able to see it in a British society about 50,000 years ago.but when it wasn't sunbathing and it was looking for prays it was lighting fast.