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

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.

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

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.

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...

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...