The picture below shows a swell penetrating into Poverty Bay. The picture shows the effects of the island and reefs offshore from Gisborne City. The quality Right and Left peaks at Gissy Pipe are created by the offshore reefs focusing the waves as they propagate into Poverty Bay. The picture also shows waves focusing onto Tuamatu Island by the reefs around the island.

The picture illustrates the spatial scale used in some of the modeling by MetOcean Solutions and released by Swellmap.com