![](https://yodare.co.uk/wp-content/uploads/2019/06/20190615_233357-1024x543.jpg)
Appearing like a small “pimple” on the chocolatey brown waters of the Bristol Channel Denny Island marks the boundary between Wales and England.
![](https://yodare.co.uk/wp-content/uploads/2019/06/GOPR2748_Moment_Moment-1024x681.jpg)
The tides in the estuary and Bristol Channel are the second highest in the world reaching 13.7 m (45 ft) at the spring equinox and create a chocolatey brown colouring to the water. The island is known as a nesting-place for gulls, cormorants and other seabirds, which are regularly seen and ringed there. In fact on the day I rounded the island there were people scrambling over its rocky surface doing just that.
![](https://yodare.co.uk/wp-content/uploads/2019/06/20190616_062449-1024x519.jpg)