Whakaari, also known as White Island, is an active volcanic island located about 50 kilometers off the coast of New Zealand's North Island, in the Bay of Plenty region. It is one of the most active volcanoes in New Zealand, and has been in a state of almost continuous activity since it was first observed by Europeans in the late 18th century.

The island is roughly circular, with a diameter of about 2 kilometers. It is a stratovolcano, composed of alternating layers of ash, lava and other volcanic materials. The island has a large central crater that is open to the sea, and several smaller craters and vents around its perimeter.

Whakaari has erupted numerous times throughout its history, with the most recent eruption occurring in December 2019. This eruption resulted in the tragic deaths of 22 people who were visiting the island as part of a tour group. Following the eruption, access to the island was restricted and the risk of further eruptions is constantly monitored.

Despite its dangerous nature, Whakaari is a popular tourist destination, with guided tours available from the nearby town of Whakatane. Visitors can explore the island's geothermal features, including steaming vents and boiling mud pools, and observe the island's abundant bird life, including gulls, terns, and petrels.