About Boating Safely: 9 a.m. to 5 p.m. sponsored by the USCGA at Spanish River Park Headquarters, 3939 N. Ocean Blvd., Boca Raton. Cost: $35 adults, $20 teens. Bring your own lunch. 561-391-3600; fso-pe@cgauxboca.org.

9th Annual Palm Beach Marine Flea Market & Seafood Festival: 9 a.m. to 5 p.m., runs through Sunday at South Florida Fairgrounds, 9067 Southern Blvd., West Palm Beach. Admission: $7 adults, free kids under 12. 954-205-7813; www.flnauticalfleamarket.com.

Hillsboro Lighthouse Tour: 9 a.m. to 3 p.m. boat departures to the lighthouse from Sands Harbor dock, 125 N. Riverside Drive, Pompano Beach. Cost: $35 individual annual membership or $50 for a family of 4. 954-942-2102; www.hillsborolighthouse.org.

Hollywood Beach Sweep Clean up: 7-11 a.m. volunteer event at Charnow Park, 300 Connecticut St., Hollywood. www.hollywoodfl.org/index.aspx?NID=746.

Fort Lauderdale Beach Sweep Cleanup: 7-11 a.m. volunteer beach cleanup at Fort Lauderdale Beach Park, 300 S. Fort Lauderdale Beach Blvd., Fort Lauderdale. 954-593-8501; www.facebook.com/events/1538210886229311.