|"The Deadly Dolphin"|
|Season 3, Episode 9|
|Air date||December 1, 1978|
|Written by||Jackson Gillis|
|Director||Sigmund Neufeld Jr.|
A dolphin is stolen from a local aquarium as part of a plan by a criminal mastermind to acquire real estate along California's shoreline.
- Lynda Carter as Diana Prince / Wonder Woman
- Lyle Waggoner as Colonel Steve Trevor, Jr.
- Nicolas Coster as Silas Lockhart
- Britt Leach as Billy
- Albert Popwell as Gaffer
- Michael Stroka as Henry
- Brian Tochi as Darrell
- Penelope Windust as Dr. Sylvia Stubbs
- Macon McCalman as Goodspeed
- Colin Hamilton as The Admiral
- Gregory Chase as The Captain
- Paul Tuerpe as CPO
- Tom Kratochvil as IRAC (voice)
- Wonder Woman uses her animal telepathy in this episode.
- She also displays another new power, generating unknown energy bursts which she uses to scare off sharks.