Explore North Miami's Greynolds Park, Miami-Dade County's second-oldest park, with a naturalist guide describing the area's flora, fauna and history. 9 a.m. Greynolds Park, 17530 W Dixie Highway, North Miami Beach. $3. Reservations recommended. Details: (305) 949-1741 or www.miamidade.gov/parks/parks/greynolds.asp.
KAYAK THE KEY
Happen upon great blue herons, upside down jellyfish and spotted eagle rays by kayak on a guided tour of the forgotten natural side of Key Biscayne. 1:30-4 p.m. Crandon Park Visitors and Nature Center, 6767 Crandon Blvd., Key Biscayne. $44. Details: (305) 365-3018 or www.miamidade.gov/parks.
Explore Key Biscayne on a three-hour, 10-mile guided bicycle tour. Highlights include views of Stiltsville, white-sand beaches facing the open ocean, the remote lighthouse outpost, which is one of Miami-Dade County's oldest structures, and the quiet beauty of Biscayne Nature Center. 9:30 a.m. Bill Baggs Cape Florida State Park, 1200 Crandon Blvd., Key Biscayne. $65. Details: (305) 774-9019 or email@example.com or www.dragonflyexpeditions.com.
The Biscayne Nature Center hosts a "Sea Turtle Release" event for young professionals. Cocktails and appetizers available. 7-10 p.m. Marjory Stoneman Douglas Biscayne Nature Center, 6767 Crandon Blvd., Key Biscayne. $10 suggested donations. Details: (305) 361-6767 ext. 114 or firstname.lastname@example.org or www.biscaynenaturecenter.org.
PADDLE THE GABLES
Take in the city's beautiful memorable sites by water on a Historic Coral Gables Waterway Canoe Adventure. 9 a.m.-noon. A.D. Barnes Park, 3401 SW 72nd Ave., Coral Terrace. $33. Details: (305) 365-3018 or www.miamidade.gov/parks.
Catch an up-close glimpse of wading birds and other wildlife on a guided kayak exploration of the Oleta River and its mangrove-lined creeks. Included is an opportunity to visit an archeological site where Tequesta Indians lived more than 2,000 years ago. 10 a.m.-1 p.m. East Greynolds Northeast Regional Dog Park, 16700 Biscayne Blvd., North Miami Beach. $25. Details: (305) 945-3425 or www.miamidade.gov/parks/greynolds.asp.