Saturday - 7/24 - Adventures in Marine Biology - This program provides a beginner's look into the field of Marine Biology at the Gumbo Limbo Nature Center, 1801 N. Ocean Blvd., Boca Raton. For children ages 7-12; adults will not need to stay. 10:30 am-12:30 pm. $7/members, $10/non-members - per child. Reservations and pre-payment required: 391-8110.