Season One
39 episodes · Feb 12, 1971
Barrier Reef is about the adventures of a scientific search and recovery team working for General Trust Corporation, a large Australian industrial and pastoral group.
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- S1E1
Rendezvous
Feb 12, 197130mA high ranking Government official makes a secret visit to the Endeavour to determine whether General Trust Corporation may use it's Minus Five equipment to commercial advantage without affecting the natural heritage of the Great Barrier Reef. The project is placed in jeopardy when, riding in the mini-submarine, he nearly loses his life. Dr. Paul Hanna, of the Government Science Council, joins the team on board the Endeavour.
- S1E2
Galleon
Feb 19, 197130mA Spaniard tricks the Minus Five team into using their equipment to locate a sunken galleon which, he says, carried a fortune in gold. His real reason is to prove a Spaniard discovered the Australian coast before Captain Cook.
- S1E3
Something Beginning with M
Feb 26, 197130mAn industrial spy gets aboard the Endeavour to photograph the top secret equipment, but he turns out to be not such a bad bloke when he realises his methods endanger Captain King's life.
- S1E4
Strange Cargo
Mar 5, 197130mThe Minus Five team discover a murdered man in Barrier Reef waters, and he is buried on a small, lonely island. He is to be exhumed by the police, but when Sgt. Davies goes to the grave the body is missing, and the Minus Five team land in a strange network of intrigue.
- S1E5
The Pewter Chalice
Mar 12, 197130mTwo nuns ask the Minus Five team to help them recover a sacred chalice lost in a wreck off the Great Barrier Reef, but Captain Ted King reluctantly declines assistance as the Endeavour is under orders for another assignment. The nuns risk their lives when they decide to attempt the salvage job themselves.
- S1E6
The Cannon Of Nemora
Mar 19, 197130mThe Minus Five team has salvage rights to a vessel sunk off the Barrier Reef in the 1800's, but when they arrive they find divers down below. The gold disappears and it seems it has been stolen from under their noses. A cannon from the wreck and an old log book must be found before the mystery can be solved.
- S1E7
The Pirates
Mar 26, 197130mTense moments mix with comedy when three students capture the Endeavour and, thinking the crew are spies, plan to hand them over to the police.
- S1E8
Old Gold
Apr 2, 197130mOld Harry tells Steve Gabo about two million dollars of gold coin carried on a plane lost during World War 2, which he has been trying to locate for years. The Minus Five team begin a search and find more than they bargained for - two skeletons, and two armed men who could be murderers, but who are in fact Commonwealth Police.
- S1E9
Slipway
Apr 9, 197130mThe Endeavour puts into a slipway in Townsville for inspection and maintenance, and the crew welcomes Diana Parker, the charming new operator for the Minus Five equipment. But there are shocks in store for all as Diana is discovered to be an impostor, and one of the diving crew narrowly escapes death.
- S1E10
When Big Fish Die
Apr 16, 197130mExploring an underwater oil field near the Great Barrier Reef, the mini-submarine crew strikes new danger - an ear-splitting, high-frequency sound that kills fish, and even disables the Minus Five electronic equipment.
- S1E11
Russians Are Red
Apr 23, 197130mThe Minus Five team become involved in political intrigue when a defector from a Russian ship asks them for political asylum in Australia. Steve Gabo takes his side, until he learns the Russian is not a refugee, but a thief.
- S1E12
Cyclone
Apr 30, 197130mThe Endeavour runs before Cyclone Ada, which devastates tourist resorts on the Great Barrier Reef and towns on the North Queensland coast. After the disaster, the Minus Five team return to the area to search for survivors, and play an important role in rescue work.
- S1E13
Assignment in Shute
May 7, 197130mThe Endeavour crew are assigned to search for a fishing launch sunk during the cyclone. They plunge into a murder mystery when in the cabin they find a body with a knife in his back.
- S1E14
Thursday Girl
May 14, 197130mA beautiful young girl from Thursday Island stows away on the Endeavour, claiming Jack Meurauki has promised to marry her. Hiding the girl from the Captain proves a major problem.
- S1E15
Nothing But The Truth
May 21, 197130mMinus Five picks up uranium readings which appear and disappear. A trawler hauls in a catch of fish which could be radioactive, but a more important 'catch' is contested with spear guns under the ship as the Endeavour crew stumble upon uranium smugglers.
- S1E16
White Death
May 28, 197130mThe Endeavour is assigned by the government to chart unknown channels in the Barrier Reef. A man once badly mauled by a white pointer shark seeks revenge in the shark's breeding ground and endangers the lives of the Minus Five divers.
- S1E17
Echoes From The Past
Jun 4, 197130mThe Minus Five team is commissioned by the Royal Australian Navy to locate and chart a mine field off the Barrier Reef. During the trip, Captain Ted King risks his life to rescue one of his crew trapped in the mine field, while mines are breaking loose from the rusted cables and menacing the ship.
- S1E18
A Matter of Money
Jun 11, 197130mThe Endeavour's attractive new scientist learns a bitter lesson in security when she innocently arranges passage to Townsville for a colleague. Customs officer Morgan and the Minus Five team are held at gunpoint by the passenger who demands the surrender of counterfeit money plates which have been discovered attached to the ship's hull.
- S1E19
Scotch on The Rocks
Jun 18, 197130mA wreck with a cargo of whisky hangs precariously on a ledge on the Reef. A puritan Scotsman plans to destroy the cargo, and a drunken beachcomber warns the Minus Five team, who are working to retrieve a new navigational aid from the wreck. The navigational aid must be assessed, for if it is defective it could endanger the other five ships it has been issued to, but their work is hampered by the old Scotsman who is determined to destroy the whisky before it can cause any evil.
- S1E20
God Bless Her
Jun 25, 197130mA mad scientist, intent on preserving the Barrier Reef from exploitation, plants explosives aboard the Endeavour as the crew wait to welcome the Royal Britannia during the Royal Visit to Townsville.
- S1E21
Let Sleeping Dogs Lie
Jul 2, 197130mA Japanese submarine sunk during World War 2; a Shinto burial service; and the unusual interest displayed by a Member of Parliament plunge the Minus Five team into a new mystery on the Barrier Reef.
- S1E22
Sea Fever
Jul 9, 197130mA strange illness threatens the life of three people on the Great Barrier Reef when an old scientist loses control of dangerous research into the effects of radiation on the cycle of marine life.
- S1E23
Shark Bait
Jul 16, 197130mA wealthy fisherman hunts for a world record size shark, and baits an area with bloody meat. One of the Minus Five divers becomes trapped by a thrashing shark pack attracted by the bait.
- S1E24
The Tripod
Jul 23, 197130mThe owner of an illegal fishing fleet is desperate when the Minus Five team find a strange tripod on the sea bed which is his early warning system. He sends out a bogus distress signal to lure the Endeavour away from the area.
- S1E25
Coconut Ice
Jul 30, 197130mThe idea of icebergs in the tropical waters of the Barrier Reef at first amuses the Minus Five team, but the situation becomes grim when the icebergs prove to be real and a threat to shipping. Captain Ted King asks the inventor of the icebergs on board the Endeavour to join the team.
- S1E26
Moon Shot
Aug 6, 197130mA deadly, radioactive 16½ inch cylinder, released into the sea near the Great Barrier Reef from the crippled spacecraft Apollo 13, must be recovered and contained before the whole area becomes a graveyard. The assignment is given to the Minus Five team.
- S1E27
The Speckled Stone Fish
Aug 13, 197130mA bizarre attempted murder by the Mafia can only be prevented by a marine biologist and the Minus Five team working together. They must catch a deadly stone fish alive so that an antidote can then be made to save the dying man.
- S1E28
The Old Skipper
Aug 20, 197130mAn ageing sea captain who was the original skipper of the Endeavour determines to scuttle the ship so they can die together. Alone with him on the ship, Tracey Deane tries to change his mind.
- S1E29
Sell Out
Aug 27, 197130mOne of the Minus Five team acts as bait to catch a company official selling classified information about a newly discovered nickel field on the Barrier Reef.
- S1E30
Black Diamond
Sep 3, 197130mThe Minus Five team find an unconscious diver in the water and another on the sea bed. Attempting a rescue, one of the team gets nitrogen narcosis and tries to give a shark boxing lessons.
- S1E31
The Tunnel
Sep 10, 197130mWhen the roof of a cave below the Great Barrier Reef collapses and traps one of the Minus Five divers, the others have to work against time to rescue him.
- S1E32
Sanctuary Cay
Sep 17, 197130mThe Minus Five team clash with big business wanting to exploit a tropical island, even though it would mean the extinction of millions of protected seabirds.
- S1E33
The Missile
Sep 24, 197130mA live missile embedded in the coral reef makes a dangerous proving ground for a celebrated Royal Australian Navy diver who has lost his nerve.
- S1E34
His Majesty Regrets
Oct 1, 197130mA monster turtle and a blonde diver girl form a strange alliance to frustrate the Minus Five team's latest assignment.
- S1E35
Voices In The Deep
Oct 8, 197130mForeign voices are heard by Kip over the radio as he searches below the Endeavour for one of his tools. The Minus Five team are challenged by strange divers who accuse them of spying.
- S1E36
Pilgrims Progress
Oct 15, 197130mA desk-type security agent involves the Minus Five team in a dangerous duel with jet-boats when two men are discovered tapping an undersea cable and selling information to a foreign power.
- S1E37
Oysters Never Tell
Oct 22, 197130mThe Minus Five team play cops and robbers with a pearl smuggler, and one of the team becomes trapped in an underwater cave.
- S1E38
Bird Cage
Oct 29, 197130mThe Minus Five team become involved in a lover's quarrel, which quickly turns very serious when the girl involved is trapped in a cage on the sea bed, and all evidence points to attempted murder.
- S1E39
The Fence
Nov 5, 197130mThe Minus Five team need all their skill to locate and rescue Kip Young, who has been overcome by the energy force of a sonic fence which was laid to warn submarines approaching the Great Barrier Reef. (Final episode of the series.)