Ocean power in New Zealand speed. Because the tidal speed doubles, eight times more tidal power can be produced at spring tides than at neap tides. The entrance to Kaipara Harbour, one of the largest harbours in the world, is a channel to the Tasman Sea. It narrows to a width of , and is over deep in parts. On average, Kaipara tides rise and fall . At high tide, nearly 1000 square kilometres are flooded. Spring tidal flows reach 9 km/h (5 knots) in the entrance channel and move 1,990 million cubic metres per tidal movement or 7,960 million cubic meters daily. In 2011,
Married to the Sea Sea" comic was posted online on February 13, 2006. The site now sells several T-shirts and prints based on comics from "Married to the Sea'. In March 2012, Drew and Natalie created three new websites full of non-comic content. These are @drewtoothpaste, The Worst Things for Sale, and Stuff I Put on Myself. NatalieDee is a webcomic created by Natalie Dee Fairweather, one of the authors of Married to the Sea. There is a new comic added daily to NatalieDee.com. The Webcomics comprise various sketches illustrating amusing or anecdotal situations from every day life. The comics do not follow a