Splash for Cash--Participants will take to the...

Splash for Cash--Participants will take to the water on kayaks, paddleboards, surfboards, bodyboards and any other human-powered crafts for the Surfrider Foundation’s third annual Clean Ocean Paddle-a-Thon on June 28. Proceeds will be used for the Newport Beach chapter’s water-quality educational programs such as Kids Art for the Environment, the Blue Water Task Force and Teach and Test.

After signing up pledges, participants choose one of three courses, depending on their ability. Distances range from half a mile to 3.5 miles, starting from the Balboa Pier in Newport Beach. Registration begins at 8 a.m., with paddlers starting at 9 a.m. and finishing at 10 a.m. Prizes will be awarded to top money-raisers. Registration forms are available at local businesses and shops, or by calling (714) 631-6273.

Also included in the day’s activities are information and vendor booths, music and prize drawings.

Summer Science--Science and nature fans in kindergarten through sixth grade can sign up for workshops July 7-11 and July 14-18. The sessions, taught by credentialed teachers or naturalists, meet for an hour and a half daily for a week at Truman Benedict Elementary School in San Clemente. The categories: Earth Changes, Creepy Crawlies, A Tree Is a Friend, Rock Roundup, Closing the Loop, Awesome Anatomy and Light Mysteries. Cost is $38 per workshop, limited to 20 students. Registration information: the City of San Clemente Recreation Division at (714) 361-8264.

African Adventure--Eric Diggins, a 27-year-old soil scientist, spent three months backpacking in Africa, tracking lions on foot in Botswana, shooting the rapids in Zimbabwe and visiting with the people of Namibia. He will give a lecture and slide presentation on his travels at 7 p.m. Tuesday at Adventure 16 Outdoor & Travel Outfitters, 1959 Harbor Blvd., Costa Mesa. Diggins will discuss preparations, prices, equipment needed, transportation, safety and sights to see. Free. Information: (714) 650-3301.