## Estimating lionfish population sizes

Let’s focus on the lionfish in the Bahamas, a group of islands in the North Atlantic Ocean. Lionfish were first sighted there in 2004. Since then, biologists and citizen scientists have been tracking lionfish near several islands in the Bahamas. The data they’ve collected has helped estimate the population size of lionfish over time.

Watch the video to learn more about how to estimate population sizes of lionfish.

The graph below shows the estimated number of lionfish near three
island groups in the Bahamas each year from 2004 to 2014. It is
based on realistic data compiled from studies in which divers
counted lionfish. The estimates are reported as the number of
lionfish per
10,000 square meters (m^{2}).

Interpret the graph to learn how the lionfish population changed over time. In particular, the size of the population may have reached a natural limit called a carrying capacity.

Drag the arrows to your estimated carrying capacity for this population of lionfish.