# Dory Rips

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The **Dory Rips** is a phenomenon involving extreme [tidal](/source/Tide) agitation of waters located in the [Bay of Fundy](/source/Bay_of_Fundy) off the headland of [Cape d'Or](/source/Cape_d'Or) in [Nova Scotia, Canada](/source/Nova_Scotia).

The phenomenon occurs at the entrance to the [Minas Basin](/source/Minas_Basin), which is known for the globe's highest tides.[1][2]

The turbulence does not result from a simple [rip tide](/source/Rip_tide), but rather from the collision of three opposed tidal currents whose violence is enhanced by the presence of a subsurface [reef](/source/Reef) that forces the water upward. The powerful incoming tidal current loops back and collides with itself while another current, coursing in semicircular fashion around [Advocate Bay](/source/Advocate_Bay), slams into the collision point at a 90-degree angle.

## Marine Hazard

To warn mariners away from the Dory Rips, a [foghorn](/source/Foghorn) was placed at Cape d'Or in 1875 and a [lighthouse](/source/Lighthouse), which is still operational, was established in 1922.[3]

## See also

- [Rip current](/source/Rip_current)

## References

1. [*Tides*](http://www.centralnovascotia.com/tides.php) [Archived](https://web.archive.org/web/20140923054425/http://www.centralnovascotia.com/tides.php) 2014-09-23 at the Wayback Machine at Central Nova Scotia Tourism Association

1. ["High/Low Tidal Finder"](http://www.tide-forecast.com/locations/Abott-Harbour-Nova-Scotia/tides/latest); Worldwide Tide Forecast website (enter country, then location); accessed October 2015

1. [""Cape d'Or Lighthouse" at Nova Scotia Lighthouse Preservation Society"](https://web.archive.org/web/20141102081141/http://www.nslps.com/light-detail.aspx?ID=58&M=IP&N=2). Archived from [the original](http://www.nslps.com/light-detail.aspx?ID=58&M=IP&N=2) on 2014-11-02. Retrieved 2014-11-02.

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