We've gotten better at the surveys and added more areas we think manatees will be.

We don't use these numbers to make management decisions, because of the bias that's inherent in the number, not knowing how many we miss from year to year. These are a minimum count.

We've gotten better at the surveys and added more areas we think manatees will be. We've learned a lot about how weather affects counts, and really refined our calculations about the weather and the days that we fly.

We've learned a lot about how weather affects counts, and really refined our calculations about the weather and the days that we fly, I can't say it's not a possibility that there were 3,000 manatees in 1991.