American Pro Dive Center
- Offers daily guided tours with manatees in the Crystal River and Homosassa. Vacation packages including waterfront lodging and two-day diving instruction.
- http://americanprodive.com/

SeaKoos Eco-Tours
- Offering snorkeling and scuba diving with manatees in the Crystal River as well as fishing and scalloping trips. Equipment rental rates, photos.
- http://www.seakoos.com/

Lake Rousseau RV Park and Fishing Resort
- Year round accommodations, boat tours, and angling. Lodging, activities, and contact information.
- http://www.lakerousseaurvpark.com/

Manatee Safari
- Swim with the Manatees. Tours, FAQ, driving directions, and manatee information.
- http://www.manateetours.com/

Birds Underwater
- Manatee snorkel tours, manatee awareness programs, diving instruction, full dive and gift shop, videos, and kayaks.
- http://www.birdsunderwater.com/

Ferrell's Fishing Tours
- Fishing and eco-tours. Description of trips, photos, location details.
- http://www.xtalwind.net/~jtf/