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Palmer Long Term Ecological Research (PAL) program seeks to obtain a comprehensive understanding of the Antarctic seasonal sea-ice-influenced ecosystem ― the climate, plants, microbes, animals, biogeochemical processes, ocean, and sea ice south of the Antarctic Polar Front (northernmost extent of ice-influenced water). Our research focus is to understand the foraging behavior and ecological role of humpback whales and minke whales in the LTER study region in response to climate-driven changes. Since PAL’s inception in 1990, its central hypothesis has been that the seasonal and interannual variability of sea ice affects all levels of the Antarctic marine ecosystem, from the timing and magnitude of primary production to the breeding success and survival of penguins and whales. Our site on the western side of the Antarctic Peninsula (WAP) addresses multiple spatial and temporal scales, including hemispheric, decadal, and climate-relevant scales; regional, local, and daily scales; and seasonal and process-relevant scales.