A PBS-TV travel program, "Vacations on the Fly", recently filmed two shows on Ambergris Caye highlighting flyfishing, snorkeling, scuba diving etc. In one episode they traveled to Lamanai as a side trip.

It airs nationally through PBS. It is scheduled to be sent to
satellite on March 30/31st. Each station airs it at different times,
depending on their market. But a viewer can call their local station and
ask if/when it is being aired.

I will put up some more information as the time gets close, but sounds awesome!