Principal — famous for her role in the 1970s and 1980s drama about a Texas oil family — made “extremely generous six–figure donations” to both Oceana and the Natural Resource Defense Council (NRDC), which both lobby against increased exploration.

The actress first donated cash to the groups last year in the wake of the BP oil disaster in the Gulf of Mexico, which was spent on a state-of-the-art underwater robot to monitor the presence of oil off Florida.

Oceana