Many of us are aware of how massive icebergs can get—some are practically giant ice islands the size of small countries. But few of us have seen how truly enormous they are under water. Photographer Tobias Friedrich braved the freezing waters of Greenland to see just that, diving 98 feet to capture the immense size of icebergs in a set of stunning photos.

Friedrich, 35 and from Niedernhausen, Germany, photographed the icebergs near Tasiilaq, the capital of East Greenland, and admitted he knew diving near the giant icy towers was risky. "It's quite dangerous diving so deep around the iceberg because at any moment something on it could break off and hit divers or the boat," he said. "Unfortunately I'm only able to capture images like this from time to time as the travel costs of getting to, and staying in, Greenland are very expensive."

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Weather was an important factor in determining the best time to take his camera and dive into the freezing but crystal-clear waters. Friedrich had to wait for ideal conditions to capture his photos. "'I love working in such an extreme environment and taking pictures where nobody or only a few people havebel been before."

Friedrich is no stranger to the beautiful worlds hidden below the ocean's surface. He started taking underwater photographs in 2007 and has since been featured in scuba diving publications such as US Sport Diver, Unterwasser, Tauchen, and Scuba Diver Through The Lens. He also won awards at the 2016 Underwater Photographer of the Year competition. See more of Friedrich's work on his website.