Niue is one of the few Pacific island countries that only consist of a single island. With a total population of less than 1000 people, you won't be diving with the crowds.
Niue offers good diving in exceptional clear water. As there are no overground freshwater streams leading into the ocean, visibility here is often way over 50 metres. Clear water as well as an abundance of the endemic sea krait (sea snake) population make diving in Niue special. The sea kraits are very curious but short sighted and often come right up to your mask to check you out. Fortunately, the endemic sea kraits are very friendly and divers do not need to worry about getting bitten.
Furthermore, Niue island is as hollow as Swiss cheese and many caves and cavern system can be found on the island, above as well as below the surface. Here you can also observe the endemic sea kraits leaving the water to lay their eggs as well as the elusive coconut crabs hanging on the cave walls to drop their eggs into the ocean.
Another highlight in Niue is the resident population of spinner dolphins. You can often observe them from the boat and dolphin snorkel tours are also offered. During whale season, humpback whales also migrate to Niue and whale watching is also a favourite activity.
If you are into exploration, caverns and caves as well as sea life, you cannot go wrong with Niue.