The adventures of a marine biologist and his family as they fight environmental crimes and other problems.
| Season | From | To | Episodes |
|---|---|---|---|
| All Seasons | |||
| Specials | 0 | ||
| Season 1 | October 1985 | May 1986 | 17 |
| Season 2 | May 1986 | September 1986 | 18 |
| Season 3 | September 1986 | April 1987 | 22 |
| Season 4 | October 1987 | March 1988 | 22 |
| Season 5 | October 1988 | February 1989 | 22 |
| Season 6 | October 1989 | March 1990 | 22 |
| Unassigned Episodes | 0 |
| Season | From | To | Episodes |
|---|---|---|---|
| Unassigned Episodes | 123 |
| Season | From | To | Episodes |
|---|---|---|---|
| Season 1 | 0 | ||
| Unassigned Episodes | 123 |
| Name | Number of Episodes | Dates | |
|---|---|---|---|
| Allan King | 12 | 10/14/1987 - 01/15/1990 | |
| Ken Jubenvill | 10 | 11/18/1987 - 01/29/1990 | |
| Alan Simmonds | 9 | 11/04/1987 - 02/19/1990 | |
| Brad Turner | 8 | 11/25/1987 - 10/09/1989 | |
| Rex Bromfield | 4 | 01/06/1988 - 02/20/1989 | |
| Janet MacLean | 4 | 11/18/1987 - 10/10/1988 | |
| Deepa Mehta | 3 | 12/18/1989 - 01/22/1990 | |
| Allan Eastman | 3 | 11/11/1985 - 12/04/1989 | |
| Tim Henry | 2 | 10/16/1989 | |
| Michael Berry | 2 | 10/07/1985 - 02/10/1986 | |
| Nicholas Kendall | 2 | 02/05/1990 - 02/26/1990 | |
| Bruce Martin | 2 | 11/27/1989 - 02/26/1990 | |
| Michael Robison | 1 | 02/06/1989 | |
| Jana Ververka | 1 | 03/02/1988 | |
| Sheldon Larry | 1 | 02/12/1990 | |
| Ken Girotti | 1 | 01/27/1988 | |
| Gilbert M. Shilton | 1 | 10/07/1985 | |
| Tom Braidwood | 1 | 01/06/1988 | |
| Vaughan Raymond | 1 | 12/16/1987 | |
| Jim Kaufman | 1 | 01/02/1989 | |
| Don Owen | 1 | 01/13/1988 | |
| Pauline R. Heaton | 1 | 12/16/1987 | |
| Neill Fearnley | 1 | 12/23/1987 |
| Name | Number of Episodes | Dates | |
|---|---|---|---|
| Suzette Couture | 7 | 01/13/1988 - 02/05/1990 | |
| Keith Leckie | 6 | 12/02/1987 - 12/11/1989 | |
| Michael Mercer | 6 | 01/06/1988 - 02/26/1990 | |
| Aubrey Solomon | 4 | 01/09/1989 - 12/04/1989 | |
| Larry Gaynor | 4 | 11/21/1988 - 10/09/1989 | |
| Rick Drew | 3 | 10/28/1987 - 10/17/1988 | |
| Charles Lazer | 3 | 11/07/1988 - 12/25/1989 | |
| Peter White | 2 | 01/20/1988 - 11/14/1988 | |
| Jeffrey Cohen | 2 | 01/01/1990 - 01/29/1990 | |
| Glenn Norman | 2 | 11/28/1988 - 01/08/1990 | |
| Stephen Dewar | 1 | 12/19/1988 | |
| Jim Purdy | 1 | 01/23/1989 | |
| Ann MacNaughton | 1 | 01/15/1990 | |
| Sondra Kelly | 1 | 03/05/1990 | |
| Brian Kit McLeod | 1 | 02/13/1989 | |
| Paul Ledoux | 1 | 11/25/1987 | |
| Linda F. Jones | 1 | 11/11/1987 | |
| Peter L. Dixon | 1 | 10/07/1985 | |
| Lyle Slack | 1 | 12/12/1988 | |
| Don Balluck | 1 | 11/11/1985 | |
| Marc Strange | 1 | 01/27/1988 | |
| N.A. Cutcliff | 1 | 10/07/1985 | |
| Phil Savath | 1 | 02/12/1990 | |
| David Eames | 1 | 12/26/1988 | |
| Jeri Craden | 1 | 02/20/1989 | |
| Anna Sandor | 1 | 11/04/1987 | |
| Julie Lacey | 1 | 02/03/1988 | |
| Ken Gass | 1 | 10/23/1989 |
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