Friends of The GTM

Ocean to Estuary: A Tidal Journey
2026-12-19 09:00 - 11:00 UTC | River to Sea Preserve, 9805 Ocean Shr Blvd., St. Augustine, FL, 32080, United States
What changes as land meets the sea? Join us for an immersive walk from the Atlantic Ocean to the Matanzas River estuary, crossing dunes, maritime forest and mangroves.
EXPLORE COASTAL ECOSYSTEMS
Dunes & Beach — How do sea oats, beach morning glory and coquina rocks protect and shape the shoreline?
Maritime Hammock—What roles do trees, vines, ferns and epiphytes play in providing habitat and shelter?
Mangrove Estuary—Why is this area called the “Nursery of the Sea?” Discover marsh grasses, mangroves, oyster bars, fish, crabs and birds.
BECOME A CITIZEN SCIENTIST
How healthy is our local estuary? Join our citizen science team to investigate.
What do salinity, pH, water temperature, dissolved oxygen, plankton, wildlife, plants, weather and tides tell us about ecosystem health?
Collect real data and use evidence to explore estuary vitality.
HANDS-ON & INTERACTIVE
What tiny details reveal the big picture? Use Discovery Cards, jeweler’s loupes and field tools to observe, question and discover.
Share your findings and help build understanding of Florida’s coast.
No science experience needed—just curiosity!
REGISTER HERE!

GTM Monthly Beach Cleanup
2026-12-26 09:00 - 11:00 (America/New_York) | GTM Research Reserve, 505 Guana River Rd., Ponte Vedra Beach, FL, 32082, United States
Meet at the Visitor Center for a brief orientation and instructions at 9:00 a.m. where gloves and trash bags will be provided. You will be directed to a specific beach for cleanup. Hat, insect repellent, water and sunscreen are recommended. No signup is required.
