2/1 - Seining the Lagoon at Gumbo Limbo Nature Center, 1801 N. Ocean Blvd., Boca Raton. Explore the grasses and flats of the Intracoastal Waterway behind Gumbo Limbo. Wear clothes that can get wet. No flip-flops or sandals. Ages 10 to adult. Held again 3-4:30 pm, 2/18. 2:30-4 pm. $5/members, $8/non-members. Reservations: 544-8615.