No, “ecosexual” does not mean doing it on a picnic table in a state or national park.
‘EcoSexual’ students at SMC ‘marry the ocean’
"Earlier this month, a professor at Santa Monica College led students in an ‘EcoSexual Sextravaganza’ in which participants ‘married the ocean.’
"Amber Katherine, a philosophy professor who helped organize the May 14 event, explained to Campus Reform that the purpose of the 'wedding' was to bring about a deeper love for the planet through 'ecocentric passion and even lust.'”
There is a video at the link. I didn’t watch the video; I’d like to keep my lunch off the keyboard.
Note: The participants look the way you would expect, the worst of hippie dress.