As featured on Wednesday's show: Researchers in Florida have observed less human impact on what kind of reptile, which nests on beaches and whose gestation period is about 60 days?

The reptile that nests on beaches and whose gestation period is about 60 days is:

The sea turtle.

Explanation:

To understand this answer we need to analyze the key data provided by the exercise. First of all, there are not many reptiles that can nest on a beach. However, if we combine the nest with the gestation period. We can clearly understand that sea turtles are the correct answer because even though some iguanas can nest near or on the beach, their gestation is different, while sea turtles have 50 to 60 days of span to gestate.