Dr Phil Harmon is attacked by a shark. He radios to bring a rare blood type that can save his life.

The boys find themselves in deep water when they disobey their father and dive down to investigate a car that has been dumped in the ocean.

Flipper comes to the rescue when a submarine gets caught on the bottom of the ocean, trapping its occupant who is fast running out of air.

Bud isn't happy with the new woman in his father's life. Feeling alone in the world, Bud stays out in the ocean too late and winds up lost in an underwater cave at high tide.

City boy, Mike Beldon arrives in Corel Key with a huge chip on his shoulder about his mother's new husband. However, a near death accident helps him see his new step-father in a different light.

Dorrie steals Flipper and sells him to a carnival owner.

Porter is concerned that Bud is taking old Hap Gorman's stories too seriously and warns his son that not everything the old man tells him is true.

Flipper's days are numbered when he is accused of eating a prized fish worth a lot of money. Just as Flipper is to be cut open to retrieve the fish, Bud and Sandy discover it has been stolen by Jim and race to prove their pet's innocence in before it's too late.

Bud and Sandy hear Flipper say in plain English he wants to leave for London with Professor Marvello, and the professor's circus colleagues bring nets to take Flipper away.

Flipper saves the life of an old Greek sponge poacher in the preserve, but Bud and Sandy tell Po of his illegal activities.

Po and Sandy rescue a despondent former water ski champion, now in a wheelchair, and her mother from a hurricane. Flipper gets tangled in a fishnet.

Despite their best attempts to impress a visiting Congress woman, Porter and the boys are devastated to learn that she plans to close the park.

In a last ditch attempt to convince Congress woman Helen Browning that she should use government funding to keep the Park open, Sandy and Bud take her skin-diving.

Bud and Sandy, on a trip with Hap Gorman to his secret fishing grounds, board an abandoned boat, not knowing that a hidden charge of dynamite is about to blow it to pieces.

Sandy, Bud and Flipper decide to become detectives when reports claim that someone has been looting boats in Coral Key Park.

Flipper leads Bud to a beach where Lynn Borden lies half conscious after falling off a boat 20 miles at sea.

Porter Ricks, Sandy and Marine Researcher Dr Williams Tollner go to sea to investigate a school of lemon sharks which have invaded Coral Key Park.

Pretty teenager Bonnie McCoy takes Sandy by surprise when she sails into view aboard a floating zoo.

Flipper finds money underwater and presents some of the bills to Bud. Flipper shows Bud where it came from and they collect more from the underwater wreck.

Flipper goes to Bud and Porter Ricks for detective help after seeing a treasure chest stolen from the wreck of a sunken Spanish ship hidden on a nearby island.

Flipper disappears for several days and, when found by Porter Ricks, Sandy and Bud, is with another dolphin, an amazing albino the only white dolphin in Porter's memory.

While Sandy and Bud prepare for the annual Coral Key Park swimming race, Porter is overcome by toxic chemicals dropped from a passing ship while he is carrying out an underwater investigation.

Sentinel of the sea Flipper discovers a sinking raft, manned by Bonnie McCoy, her father, an elephant and a chimpanzee.

In an effort to raise money to pay off creditors of McCoy's Floating Zoo, Sandy and Bud join Bonnie McCoy in a scheme to run away with her father's elephant and chimpanzee.

Judy the chimp steals a briefcase full of money and Sean McCoy of McCoy's Floating Zoo is arrested. Sandy, Bud and Bonnie decide to put on a show with Flipper to raise money for her father's bail.

Like the heroes he sees on TV, Bud tries to rescue a damsel in distress, but fails to tell Porter or Sandy of his intentions, and suddenly finds himself caught in a dangerous rip.

Bud trying to help an injured man and his wife marooned on a sailboat, has to call desperately for help from Flipper when the boat becomes caught in treacherous coral reefs.

Flipper, being a pack animal by instinct, is attracted by the sound of a school of dolphins and nothing Porter, Sandy or Bud can do will bring him back.

A motion picture company moves in to film an underwater monster picture in Coral Key Park, and Flipper become star struck.