Alien versus native
In the near corner, looking fleshy and pale green is iceplant (the alien, brought in to "stabilize" sand dunes it often does more harm than good). In the far corner, looking a cheerful yellow is Isocoma menziesii (Menzies' goldenbush)
I camped at Pt Mugu Beach State Park this last weekend. It was a rare opportunity to camp right on the sand, 10' from the high water mark. The weekend was full of photos, but this was the only plant photo that I took. ID of Goldenbush is based on a Claflora search - this particular example seems more prostrate than online descriptions state, perhaps due to competition from the iceplant.