Northern California30-foot Humpback Whale Washes Up on California BeachSaveMark Us Preferred on GooglePrintA stranded 30-foot juvenile male humpback whale at North Beach in Point Reyes National Seashore on Dec. 26, 2017. The Marine Mammal CenterHolly KellumWashington Correspondent12/27/2017|Updated: 12/27/2017A 30-foot humpback whale washed up on a California beach on Sunday, Dec. 24, and researchers are now trying to determine how it died.The cetacean was discovered by passersby at the North Beach in Point Reyes National Seashore, about 15 miles southwest of Petaluma.We had a problem loading this article. Please enable javascript or use a different browser. If the issue persists, please visit our help center.