We have described the ones we will be using below.
Researchers use a method called a residency scan.
A residency scan is where we observe a particular location over a period of time to determine how many dolphins are in the area. The boat stays in one location to do this so that the only variables we are looking at is the time of day, the weather and any human activity in the observation area. The areas were we will be doing residency scans are at the confluence of two rivers. Tamara has noticed over the course of her study that both species of dolphins tend to congregate in these areas. The reason why is still not known.