The last full moon of summer will be visible Aug. 25-26, and you can view it during a couple of hikes led by East Bay Regional Park District naturalists.

One of the programs is from 6:30 to 9:45 p.m. Aug. 25 in the Oakland hills, led by naturalist Michael Charnofsky. During the 3-mile hike from Chabot Space and Science Center on Skyline Boulevard, Michael will talk about the reason we have seasons, and the group will listen for owl calls. After a sunset trail dinner (bring your own), the group will return to the center for free telescope viewing of the full moon. The program is for ages 10 and older. It’s free, but registration is required. For registration and information, call 888-327-2757. Select option 2 and refer to program 21878.

The other full moon hike is from 7 to 9:30 p.m. Aug. 26 at Black Diamond Mines Regional Preserve in Antioch, led by naturalist Eddie Willis. Watch the full moon rise over the Sierra Nevada while Eddie tells stories of the night sky and the animals that inhabit the park. This hike is for ages 8 and older. It’s free too, but again, registration is required because the program is after normal park hours. Call 888-327-2757 and refer to program 21655.

If you’d prefer a daytime program, join naturalist Kevin Dixon from 9 to 10:30 a.m. Aug. 25 in Black Diamond Mines’ parking lot at the upper end of Somersville Road, 3½ miles south of Highway 4. Kevin will show a live snake, then lead a short walk while talking about how snakes live in the wild. For information, call 888 327-2757, ext. 2750.

Berkeley: The natural history and recreational features of Tilden Regional Park near Berkeley are the focus of two naturalist-led hikes planned Aug. 25-26. Naturalist Anthony Fisher will lead a nature walk from 2 to 3:30 p.m. Aug. 25 through the Tilden Nature Area. It’s an all-senses ramble to experience the park’s plant and animal life.

And naturalist “Trail Gail” Broesder plans a walking tour of Tilden’s many attractions from 9 a.m. to 3:30 p.m. Aug. 26. Designed for ages 8 and older, the itinerary includes the Nature Area, carousel, steam train and botanic garden. Both programs start at the Environmental Education Center, which is at the north end of Tilden’s Central Park Drive. For information, call 510-544-2233.

Alameda: It’s summer beach cleanup time from 10:30 a.m. to noon Aug. 26 at Crab Cove Visitor Center in Alameda with naturalist Morgan Dill. Volunteers can help pick up washed-up litter and maybe find some items to add to the visitor center’s Museum of Coastal Cleanup Oddities. Bring your own buckets and gloves, or you can borrow them from the park. Meet at the center, which is at 1252 McKay Ave. off Alameda’s Central Avenue. Call 510-544-3187.

Fremont: Hummingbirds are the stars of a special program from 9:30 to 11 a.m. Aug. 25 at Coyote Hills Regional Park in Fremont with naturalist Kristina Parkison and photographer Don Jedlovec. Jedlovec will show new photos, stop-motion video and techniques for capturing amazing images of the “flying jewels.” Designed for ages 12 and older, the program is free, but registration is required. Call 888-327-2757, select option 2 and refer to program 21592. Coyote Hills is at the end of Patterson Ranch Road off Paseo Padre Parkway. There’s a parking fee of $5 per vehicle.

Online: This is just a partial list. There’s always lots to do in the regional parks. For more information, check out the district’s website at www.ebparks.org.

Ned MacKay writes a regular column about East Bay Regional Park District sites and activities. Email him at nedmackay@comcast.net.