Amigos de Bolsa Chica offers free public tours from 9 to 10:30 a.m. the first Saturday of each month at the pedestrian bridge at the Bolsa Chica wetlands on Pacific Coast Highway across from Bolsa Chica State Beach. (714) 840-1575.
Bolsa Chica Conservancy Interpretive Center at Warner Avenue and Pacific Coast Highway features marine aquarium and displays about wetland plants, invertebrates, fish, birds, reptiles, mammals, ecology and restoration. The center is free and open to the public and school groups from 10 a.m. to 4 p.m. Tuesday through Friday, from 9 a.m. to noon on Saturday, and from noon to 3 p.m. on Sunday. Service Day is the last Saturday of each month from 9 a.m. to noon at the walking bridge. (714) 846-1114.