Matches in DBpedia 2015-10 for { ?s ?p "Delta and Dawn, also known as the Delta whales, were two humpback whales, a mother and her calf, which entered San Francisco Bay in early May 2007. They swam up the Sacramento River approximately 90 nautical miles (170 km) upstream from the Golden Gate, about 20 miles (32 km) further inland than Humphrey the Whale had gone two decades earlier. Per the Endangered Species Act, California state officials were required to rescue the animals. Their journey was thought to be longest freshwater incursion by humpback whales."@en }
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- Delta_and_Dawn abstract "Delta and Dawn, also known as the Delta whales, were two humpback whales, a mother and her calf, which entered San Francisco Bay in early May 2007. They swam up the Sacramento River approximately 90 nautical miles (170 km) upstream from the Golden Gate, about 20 miles (32 km) further inland than Humphrey the Whale had gone two decades earlier. Per the Endangered Species Act, California state officials were required to rescue the animals. Their journey was thought to be longest freshwater incursion by humpback whales.".