National Geographic's Explorer-at-Large, Dr. Sylvia Earle at Manatee Lagoon > Join National Geographic's Explorer-at-Large, Dr. Sylvia Earle at the Wave Makers Ocean Symposium at the Manatee Lagoon on Friday, April 26 at 9:00 a.m. Suggested donation of $250 per person. 100% of your donation helps fund our Wave Makers STEM Competition for kids in Florida.