Tijuana Estuary

The Tijuana Estuary is a Wildlife Refuge at the mouth of the Tijuana River just north of Mexico. It is a tidal wetlands that supports an amazing variety of plants, animals, and birds right next to a large city.
A few of the houses in Imperial Beach right next to the estuary. A navy base is just to the right out of the frame.
A red flower that was growing in a dry area near one of the watercourses.
Prickly Pear cactus. The red knob is its fruit.
I'm not sure what this plant is, but it looked really neat next to the flags.