Restoring California rock reefs, an easy hike in Palos Verdes and a photo workshop in Joshua Tree

SAN PEDRO

Lecture

Learn how scientists are developing and implementing techniques to restore the California rock-reef ecosystem.

When, where: 7-9 p.m. Friday at the Cabrillo Marine Aquarium, 3720 Stephen M. White Drive, San Pedro.

Admission, info: Free. RSVP to (310) 548-7562 or lecture@cmaqua.org.

HIKING

Family hike

Join a naturalist guide and discover habitat, wildlife and more on an easy, family-friendly hike in George F Canyon.

When, where: 9 a.m. Saturday,, George F Canyon Nature Center and Preserve, 27305 Palos Verdes Drive East, Rolling Hills Estates.

Admission, info: Free. (310) 547-0862. RSVP to www.pvplc.org

JOSHUA TREE

Photography

Craig Fucile will lead an instructional program as well as an all-day photo shoot in the Big Morongo preserve and Keys Ranch.

When, where: 7:30 a.m.-5 p.m. Saturday, Big Morongo Canyon Preserve. Repeats Dec. 4 at the same time. Class size limited.

Admission, info: $95. RSVP to (760) 367-5535

Please email announcements at least three weeks before the event to travel@latimes.com.