An environmental terrorist targets the institute.

Chris helps to re-unite a father and son.

Dr. Keith Ricks returns to Florida to head an ocean research team...

Pirates blow up a yacht, inspiring a search for Spanish coins and threatening the dolphins.

When Alex goes to naval camp, Tom tends the family.

Chris finds an old sword and launches a treasure hunt.

A solo yachtswoman learns an important lesson about human nature.

Jackie and Audrey trace a message in a bottle.

Audrey helps Cap reunite with an old flame.

Delaney is accused of negligence after a rescue.

A wealthy thrill-seeker tries to corrupt the Hamptons.

Flipper is blamed for dolphin attacks.

A diver looking for Atlantis saves Courtney.

Susy runs away from Princess Weekend.

Tom and Alex mark their anniversary.

Holly and Courtney help a diver try for a world record.

A hurricane is headed towards Bal Harbour.

Keith and Pamela elect to remain at the institute with Aphrodite, a dolphin in the final stages of a difficult pregnancy, as a Category 4 hurricane bears down on their island.

Tom loses confidence after a rescue attempt fails.

Courtney learns about the perils of drinking.

When Courtney's mom comes to visit, they end up fighting about everything and Sara ends up in a dangerous situation...

Alex faces a shark head-on to save someone's life.

Chris tries everything to stop his mother from marrying Tom.

A family vacation turns horribly wrong, and endangers Alex's life...

An emergency call comes through while Tom and Chris are diving and he ends up in hospital.

Chris befriends an elderly man who mourns the son that drowned at sea.

A philandering wife and her lover frame a tuna fisherman for dolphin-clubbing.

Unscrupulous characters kidnap Flipper for a Cuban hotel's dolphin show.

Keith and his brother, Sandy, battle shark poachers.

A mermaid is spotted from a newly bought submarine.

Mike tries to reunite his parents; an echolocation experiment fails.

After an underwater photographer and her pet moray turn up, so do a couple of corpses.

Flipper and Pam try to help a plane-crash survivor.

Pam, Keith and Flipper discover criminals with genetically engineered oysters.

Criminals want to salvage a nuclear missile from the ocean floor.

Aphrodite goes into labor during a hurricane.

A surfer dazzles Maya; a benefactor has eyes for Keith.

Mike and Maya inadvertently bring back a deadly virus from forbidden Monkey Island.

Tracking devices indicate Flipper was responsible for two attacks on humans.

Mike finds Maya living alone with no food or electricity; Sydney takes an unwelcome interest in the institute.

The brother of a man Keith helped send to prison plans a deadly revenge.

A hotel owner seems unconcerned about sharks swimming near the beach.

After a diving accident, Keith's dolphin speech-synthesizer dominates his dreams.

A rare-animal collector has designs on a white dolphin.