title: A multichannel ultrasonic biotelemetry system for monitoring marine animal behavior at sea.
mesh_terms: D000818:Animals; D001522:Behavior, Animal; D004560:Electricity / Q000295:instrumentation; D008027:Light; D008991:Monitoring, Physiologic / Q000295:instrumentation*; D009991:Oscillometry / Q000295:instrumentation; D011199:Potentiometry; D011312:Pressure; D012754:Sharks; D013686:Telemetry / Q000295:instrumentation*; D013696:Temperature; D014465:Ultrasonics / Q000295:instrumentation*