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.

An environmental terrorist targets the institute.

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

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

Reluctant, kidnapped Flipper is scheduled to perform for Castro.

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.

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.

After contacting pollutants, a sick dolphin strands itself near 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.

A horse trainer takes a Thoroughbred to save it from an insurance scam.

A 17th-century pirate ship fires on the Maria D.

A dashing Portuguese seeks a sword that could revise history.

An ambitious young deejay operates a pirate radio station outside the 12-mile limit.

Craig's pal has a fuel-injection system that will revolutionize power-boat racing; a saboteur has other plans.

Flipper finds a baby adrift on a raft.

Eager for ratings, a promoter tries to force a pro beach volleyball player to retire.

A drug dealer takes over the yacht where Quinn is about to wed.

A top lifeguard's performance is slipping seriously.

A great white attacks Flipper on a holiday weekend when only the interns are available.

Holly and Dean are marooned on an island with a tribe of wild teens.

Terrorists steal Aphrodite.

A stranger makes two attempts on the life of an itinerant blues musician.

The interns mistrust a younger woman who sets her cap for Cap.

Maya finds a magic amulet among her grandmother's effects.

A possible heir to an island shows up claiming to be a mermaid

At the airport, a man drops a package of five disks into Jennifer's bag.

An officer Tom knew in the Gulf War comes looking for revenge.

Holly's new flame risks his eyesight for a boxing purse.

The gang is shipwrecked on a Navy target range.

Injured Maya is trapped in a drainage ditch as a hurricane heads for the island.

Chris tries everything to stop his mother from marrying Tom.

When mayday calls seem like a hoax, Tom starts to think Chris might have something to do with it...

When an environmental disaster hits, it turns out to be political.

When Alex and Holly finds a submarine while diving, it turns out to be an old German war-sub...

When Jackie and Chris go out to look for sea monsters they end up stranded on Albino Island and make a new friend...

An old friend of Holly goes diving with Cap & Alex and ends up missing.

Chris tries to fit in with the wrong kids and ends up in trouble.

When a Chinese satellite crashes in Bal Harbor, Cap's in for a surprize!

When the Maria D breaks down, Cap has to stay with the Hamptons until he can get her repaired.

When the kids' grandma comes to visit, she can't stop comparing Tom to Jack.

Tom's niece spends Christmas with them.

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

Chris helps to re-unite a father and son.

An old friend of Mark shows up in town and turns his world upside down.

When Jackie's hero shows up in town she's very excited to meet her, only to find out that hero's aren't always what they seem like.

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

A woman's search for the truth about her father's death, unviels a secret the Navy's been keeping for a long time...

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

Mark takes Chris and three other kids on a boating trip. Chris, Brad and Eugene end up working together to save Mark and Joey's lives.

While diving, Holly's life is put in danger by her friend's panic attack.

A dying girl's one wish is to swim with a dolphin...

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

Courtney learns about the perils of drinking.

Tom loses confidence after a rescue attempt fails.

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

Aphrodite goes into labor during a hurricane.

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.

A hurricane is headed towards Bal Harbour.

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

Tom and Alex mark their anniversary.

Susy runs away from Princess Weekend.

A diver looking for Atlantis saves Courtney.

Flipper is blamed for dolphin attacks.

A wealthy thrill-seeker tries to corrupt the Hamptons.

Delaney is accused of negligence after a rescue.

Audrey helps Cap reunite with an old flame.

Jackie and Audrey trace a message in a bottle.

A solo yachtswoman learns an important lesson about human nature.

Chris finds an old sword and launches a treasure hunt.

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

Holly and Delaney discover a haunted yacht.

Flipper finds a sick dolphin.

Alex and Holly find a raft adrift with a woman aboard.

Courtney and Jackie give a princess a taste of normal life.

Flipper is stranded in a tidal lagoon.