The most extensive radio-tracking effort of bottlenose dolphins in the Indian River Lagoon using radio-telemetry reveals new and surprising information about how they use their habitats, how they spend their time, and how they interact with their own species. Researchers conducted radio-tracking by boat, with assistance from a Cessna 172 aircraft, and visually located and followed nine dolphins several times per week. Over the course of 122 hours of observation, they compiled a total of 1,390 scan samples.