From a speed-chat evening to kayaking through mangrove forests, there are many ways Northlanders can dive into Seaweek, which actually runs for two weeks.
This year's theme for the annual event is "Healthy seas, healthy people - Toiora te moana, toiora te tangata".
Northland co-ordinator Samara Nicholas said age was no barrier to learning more about the environment surrounding the region. "It's exciting to see the range of activities we have on offer in Northland this year."
Seaweek runs until Sunday, March 13. It kicked off last Sunday with children's guided kayak trips through mangroves at Waikaraka, part of Whangarei Harbour Marine Reserve.
Another series of free kayak tours is planned for the last day of Seaweek for children aged 7 plus, although any under 13 must be accompanied by an adult. Bookings are essential.