In this episode, we hear how some very peculiar sounds kept residents in Florida and San Francisco awake at night. Was it UFOs? Naval testing? The nearby sewage facility? Or was it  something far fishier? We also hear how a similar story nearly led to a war between Soviet Russia and Sweden.

Special thanks to our guests: Bob Heyman, Kirk Lombard, Prof Andrew Bass, Dr Ni Feng, and Prof Magnus Wahlberg.

For more information and to help support the show, go to www.peculiarplanet.org

Swimming, diving, and interacting with sharks is  like a dance. You want your partner close, but not too close. You also need to keep a constant eye on your partner's body language. Every movement and behaviour a shark exhibits can give a clue as to what they're going to do next. 
 
We also hear how World War II led to some of the largest shark attacks in history. After large losses of life, the U.S. Military began developing and designing shark repellents. Shark repellents are now a commercial product and can be purchased from a number of retailers and manufacturers. However,  we hear why shark repellents can cause more problems than they solve. 

Special thanks to our guests: Taylor Cunningham, Roger Koening, and Prof. Chris Lowe.

For more information and to help support the show, go to www.peculiarplanet.org

Singing fish, murderous ducks, and fungus-farming ants! We truly live on a Peculiar Planet. So subscribe to our new show which explores the wildest and weirdest moments in nature. Find out more at www.peculiarplanet.org