(J. Scott Applewhite/AP)

Setting: Upper Senate Park, across the street from the Capitol.

Cause: Warning about the risks of offshore drilling on the first anniversary of the gulf oil spill.

Bona fides: Has worked for two years with ocean conservation advocacy group Oceana; plays a doctor on “Grey’s Anatomy” spinoff “Private Practice.”

Wingmen: Seven-time Olympic medalist swimmer Aaron Peirsol; a team of youths in yellow hazmat suits who dramatically reenacted gulf cleanup efforts by scrubbing down oil-covered stuffed-toy porpoises.

What she wants: For Americans to ditch fossil fuels in favor of clean-energy sources.

How she looked: Vibrant — gingery hair, emerald-green dress, pearl-colored heels.

How she sounded: Nervous, with a hint of boredom, reports our colleague Aaron Leitko. “I know we live in a culture of, you know, lots of things are happening in this world and people are busy living their lives,” she said, stammering slightly through a five-minute speech. “ . . . But it’s our responsibility to not forget.”

Why she cares about ocean preservation: “Not just for all the great aesthetic values, but, you know, the fact that it is a food source for 4 billion people on this planet. Would be great to keep that going.”