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Name the continents you know:

Immediately you name the seven you know–North America, South America, Africa, Europe, Asia, Antarctica and Oceania (the mix up of Australia, Melanesia, Micronesia and Polynesia). But turns out, there may be more than we think there is.

In 1995, Geophysicist Bruce Luyendyk created the word “Zealandia” to describe New Zealandia and the chunks that had dissipated from the supercontinent Gondwana around 85 million years ago.

But in 2017, scientists had mapped out the remnants of an underwater continent, off the coast of New Zealand. The trouble was 94% of the 2 million square miles of this continent was underwater, challenging researchers to find it.

This past Monday, researchers from GNS Science in New Zealand released maps of the continent “Zealandia”, and included an interactive map for others to explore.

The team used a bathymetric map to identify the continent’s mountains and ridges that rise towards the surface. According to Business Insider, this also displays other features surrounding the continent such as “coastlines, territorial limits, and names of major undersea features.” All of these were covered by the large ocean levels that restricted researchers from finding the continent sooner.

Nick Mortemer, leader of the team, explains the progress the team made since then, “We’ve made these maps to provide an accurate, complete, and up-to-date picture of the geology of the New Zealand and southwest Pacific area — better than we have had before,” Business Insider.

So who knows what else lies underneath the oceans