As part of the Hidden Ocean: Chukchi Borderlands expedition, scientists are collecting ice cores to measure the physical and chemical conditions of the ice and gather biological samples. For scientists on the Arctic expedition to the Chukchi Borderlands, the first science station went by like a whirlwind, despite being a full 24-hour day of science. Despite reports of declining ice cover in the Arctic, the Chukchi Borderlands expedition team quickly learned that low ice coverage does not mean no ice coverage, as the Chukchi Sea is currently a mosaic of ice floes and open water that has been a challenge to break through. As part of the Chukchi Borderlands expedition, a marine mammal watch is being held to gain an understanding of how species composition changes as scientists move north from the Gulf of Alaska, through the Bering Sea, and into the unexplored high Arctic. In the deep sea, we see many cutthroat eels, cusk eels, halosaurs, and codlings with long, tapering body shapes. There are distinct advantages that have led to the prevalence of the long body type that help us answer the question of why is this type of fish so common in the deep sea.
In September 2009, a National Oceanic and Atmospheric Administration/Fugro multibeam sonar survey of the area around the Farallon Islands documented a probable shipwreck. Credit: NOAA/Fugro

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Navy ship mysteriously lost in 1921 found using multibeam sonar.

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