Flightseeing is a word that should have been coined here. If you can afford it, just flying around some of the remote airstrips is an adventure in itself. There are strips that seem impossibly short, strips that seem to end with a mountain, strips where if you don't take off in time you will plunge into a ravine, and airstrips surrounded on three sides by water. From Port Moresby you don't have to fly far to get the experience. There are flights to villages on the Kokoda trail and others in the Owen Stanley mountain range in Central Province and you can fly a scheduled circuit or "milk run" in one morning, although you will have to be at the airport by 5:00 a.m. Check with Airlines PNG for schedules. Fane, Ononge and Tapini strips are particularly scary. Remember your life insurance.
Fishing is becoming increasingly popular. Species include Black Marlin, Blue Marlin, Sailfish, Yellow Fin, Skipjack and Dogtooth Tuna and the Giant Trevally. Mahi Mahi Dolphin Fish, Mackerel and Wahoo. A particularly challenging fish is the black bass, which, pound for pound, is considered to be the toughest fighting fish in the world.
Information through the Surfing Association. (http://www.surfingpapuane...)
This a birdwatching mecca with over 700 species of birds including many birds of paradise (http://en.wikipedia.org/w...). Definitely bring a pair of decent binoculars and ask in the villages for a volunteer to help you find the birds. An amazing experience!
Go scuba diving, using one of more than a dozen local scuba diving operators. The national Scuba Diving industry body (http://www.pngdive.com/) is a good starting point. Papua New Guinea has some of the very best tropical reef diving anywhere in the word.
The most popular activities for tourists here are festivals such as the The Sing-Sing performances at the annual Goroka and Mt. Hagen shows. During these shows, there are usually more than fifty ensembles that turn up. The festivals are competitive and the winning ensemble is rewarded by being invited to give concerts at many restaurants and hotels during the following year. This beauty and colourfulness of New Guinea’s festivals is both pleasing to watch for tourists and helps the locals financially.