15 Bizarre Ways Marine Life Uses Sound, Light, and Electricity to Communicate

10. Croaking of Toadfish

Male toadfish produce distinctive croaking sounds by rapidly contracting muscles against their swim bladders, especially during courtship. These calls can be so loud that they interfere with sonar equipment. (utmsi.utexas.edu) Their courtship calls have even been recorded by NASA’s underwater microphones. (en.wikipedia.org)