This area of Northland from the Bay of islands north up to Cape Reinga lighthouse has so much to offer. The bay of islands is a meca for tourists in fact the whole area relies on tourists to survive as there is not much industry up this way except for maybe orchards. Apart from the ocean and islands and the big game fishing which the bay is famous for there are numerous other activities here as well.
There are numerous beach walks dotted around the area and then there is the walk out to cape brett light house, although this walk is only for seasoned trampers as the walk starts from Rawhiti on the peninsula and takes a good 8hrs one way, there is accommodation by the way of a doc hut near the light house but this is all ways booked out so be prepared to camp the night, you can also get the water taxi to Deep water cove and then the walk is only around 3hrs one way so if you dont want to stay overnight this is the way to go but either way pay attention to the weather forecast you do not want to get stuck out there in bad weather.
Out the western coastline is the Waipoua forest one of the largest stands of Kauri left in the country, there is also a Kauri museum located at Matakohe just south of the Waipoua forest. Just north of Waipoua is the west coast harbour of Hokianga. Opononi is most probally the best known part of the harbour for the dolphin named Opo that interacted with people swimming in the water way back in 1955/1956, Opo an orphaned dolphin started following fishing boats around the harbour then started to interact with the swimmers there is a monument for Opo there to this day.
Further north still on the west coast there is the expanse of Ninety mile beach that runs from Ahipara at the south end to Scotts point at the northern end you can drive you car up this beach which is classed as a public road. Back on the eastern coastline we have the fishing village of Mangonui famous for fish and chips at the harbor side shop, the KariKari peninsula there is only public access to Matai bay the rest of the peninsula is closed to the public, the beaches from here on up through Great Exhibition bay to the Parengarenga Harbor are all white silica sand there are alot of beaches here that are totally secluded you could walk all day and not see another person.