Stable isotope records of sei whale baleens from Chilean Patagonia

The datafile includes nitrogen and carbon isotope analyses of seven baleen plates from six individuals of sei whales (Balaenoptera borealis) from the Chilean-Patagonian fjord area in 0.5 cm resolution. The baleens are from dead carcasses all stranded, except of one, after a mass mortality event in 2016 (Häussermann et al. 2017; https://doi.org/10.7717/peerj.3123 ). […]