page_title: Delta and Dawn
hierarchical_section_title: Delta and Dawn
caption_attribution_description: The humpback whale calf nicknamed "Dawn" breaches with windsurfers off of Sherman Island in the Sacramento River. This humpback and her mother, nicknamed "Delta", strayed 90 miles up the Sacramento River in May 2007. They had both been injured, apparently by a boat keel. The Antioch Bridge is visible in the background.
context_page_description: 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 upstream from the Golden Gate, about 20 miles further inland than Humphrey the Whale had gone two decades earlier. Under the Endangered Species Act, California state officials were required to rescue the animals. Their journey was thought to be the longest freshwater incursion by humpback whales.
context_section_description: 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. Under the Endangered Species Act, California state officials were required to rescue the animals. Their journey was thought to be the longest freshwater incursion by humpback whales.
caption: The calf "Dawn" in the Sacramento River in 2007 with the Antioch Bridge visible in the distance
exif: {"Image ImageDescription": "SONY DSC", "Image Make": "SONY", "Image Model": "DSLR-A100", "Image Orientation": "0", "Image XResolution": "72", "Image YResolution": "72", "Image ResolutionUnit": "Pixels/Inch", "Image Software": "DSLR-A100 v1.00", "Image DateTime": "2007:05:27 16:17:17", "Image YCbCrPositioning": "Centered", "Image ExifOffset": "390", "Image PrintIM": "[80, 114, 105, 110, 116, 73, 77, 0, 48, 51, 48, 48, 0, 0, 0, 6, 0, 1, 0, 22, ... ]", "Thumbnail Compression": "JPEG (old-style)", "Thumbnail XResolution": "72", "Thumbnail YResolution": "72", "Thumbnail ResolutionUnit": "Pixels/Inch", "Thumbnail JPEGInterchangeFormat": "25369", "Thumbnail JPEGInterchangeFormatLength": "3376", "EXIF ExposureTime": "1/640", "EXIF FNumber": "8", "EXIF ExposureProgram": "Program Normal", "EXIF ISOSpeedRatings": "100", "EXIF ExifVersion": "0221", "EXIF DateTimeOriginal": "2007:05:27 16:17:17", "EXIF DateTimeDigitized": "2007:05:27 16:17:17", "EXIF ComponentsConfiguration": "YCbCr", "EXIF CompressedBitsPerPixel": "8", "EXIF BrightnessValue": "253/25", "EXIF ExposureBiasValue": "0", "EXIF MaxApertureValue": "217/50", "EXIF MeteringMode": "Pattern", "EXIF LightSource": "Unknown", "EXIF Flash": "Flash did not fire, auto mode", "EXIF FocalLength": "100", "EXIF SubjectArea": "[36871, 4101, 8207, 8202]", "EXIF FlashPixVersion": "0100", "EXIF ColorSpace": "Uncalibrated", "EXIF ExifImageWidth": "1601", "EXIF ExifImageLength": "1070", "Interoperability InteroperabilityIndex": "R98", "Interoperability InteroperabilityVersion": "[48, 49, 48, 48]", "EXIF InteroperabilityOffset": "25245", "EXIF FileSource": "Digital Camera", "EXIF SceneType": "Directly Photographed", "EXIF CustomRendered": "Normal", "EXIF ExposureMode": "Auto Exposure", "EXIF WhiteBalance": "Auto", "EXIF DigitalZoomRatio": "0", "EXIF FocalLengthIn35mmFilm": "150", "EXIF SceneCaptureType": "Standard", "EXIF GainControl": "None", "EXIF Contrast": "Normal", "EXIF Saturation": "Normal", "EXIF Sharpness": "Normal", "EXIF ImageUniqueID": "561b9b5678fd1bf086d66e97be863588"}