The coastal town of Bristol Cove is known for its legend of once being home to mermaids. When the arrival of a mysterious girl proves this folklore all too true, the battle between man and sea takes a very vicious turn as these predatory beings return to reclaim their right to the ocean.
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The peak run. Top 40% of seasons by average rating — consecutive, with an average of 7.70.
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Eline Powell
Ryn
Alex Roe
Ben Pownall
Fola Evans-Akingbola
Maddie Bishop
Ian Verdun
Xander McClure
Rena Owen
Helen Hubbell
All 36 episodes plotted by IMDb rating
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10 episodes • 2018Avg: 6.9Valley of Despair
| # | Episode | Air Date | Rating |
|---|---|---|---|
| 1 | Pilot | Mar 29, 2018 | 6.4 |
| 2 | The Lure | Mar 29, 2018 | 6.7 |
| 3 | Interview with a Mermaid | Apr 5, 2018 | 6.9 |
| 4 | On the Road | Apr 12, 2018 | 7.1 |
| 5 | Curse of the Starving Class | Apr 19, 2018 | 7.4 |
| 6 | Showdown | Apr 26, 2018 | 7.2 |
| 7 | Dead in the Water | May 3, 2018 | 7.0 |
| 8 | Being Human | May 10, 2018 | 7.0 |
| 9 | Street Fight | May 17, 2018 | 7.0 |
| 10 | Aftermath | May 24, 2018 | 6.0 |
16 episodes • 2019Avg: 7.3
| # | Episode | Air Date | Rating |
|---|---|---|---|
| 1 | The Arrival | Jan 24, 2019 | 7.3 |
| 2 | The Wolf at the Door | Jan 31, 2019 | 7.2 |
| 3 | Natural Order | Feb 7, 2019 | 7.2 |
| 4 | Oil & Water | Feb 14, 2019 | 7.7 |
| 5 | Primal Instincts | Feb 21, 2019 | 7.8 |
| 6 | Distress Call | Feb 28, 2019 | 7.4 |
| 7 | Entrapment | Mar 7, 2019 | 7.0 |
| 8 | Leverage | Mar 14, 2019 | 7.6 |
| 9 | No North Star | Jun 13, 2019 | 7.2 |
| 10 | All In | Jun 20, 2019 | 7.2 |
| 11 | Mixed Signals | Jun 27, 2019 | 7.5 |
| 12 | Serenity | Jun 27, 2019 | 7.2 |
| 13 | The Outpost | Jul 11, 2019 | 7.0 |
| 14 | The Last Mermaid | Jul 18, 2019 | 7.0 |
| 15 | Sacrifice | Jul 25, 2019 | 7.0 |
| 16 | New World Order | Aug 1, 2019 | 7.0 |
10 episodes • 2020Avg: 7.7Golden Era
| # | Episode | Air Date | Rating |
|---|---|---|---|
| 1 | Borders | Apr 2, 2020 | 5.5 |
| 2 | Revelations | Apr 2, 2020 | 8.5 |
| 3 | Survivor | Apr 9, 2020 | 7.0 |
| 4 | Life and Death | Apr 16, 2020 | 7.0 |
| 5 | Mommy and Me | Apr 23, 2020 | 9.0 |
| 6 | The Island | Apr 30, 2020 | 9.0 |
| 7 | Northern Exposure | May 7, 2020 | 8.0 |
| 8 | ‘Til Death Do Us Part | May 14, 2020 | 9.0 |
| 9 | A Voice in the Dark | May 21, 2020 | 6.0 |
| 10 | The Toll of the Sea | May 28, 2020 | 8.0 |
