Keeping Up Southern Resident Killer Whale mother and her calf swimming.(Original source and more information: National Ocean… https://www.rawpixel.com/image/4044163/photo-image-ocean-fishFree Image from public domain licenseKORSOR, Denmark (Sept. 9, 2019) - A Remote Environmental Measuring Units (REMUS) 100 autonomous underwater vehicle deploys… https://www.rawpixel.com/image/3399030/free-photo-image-animal-aqua-scuba-bombFree Image from public domain licensePeople in the opening of a cave filled with ice and snow. Original public domain image from Wikimedia Commons https://www.rawpixel.com/image/3293987/free-photo-image-iceberg-shark-albertaFree Image from public domain licenseSuelo nevado en Chamonix, Francia.English: Snow surface in Chamonix, France.. Original public domain image from Wikimedia… https://www.rawpixel.com/image/3295017/free-photo-image-animal-cc0-creative-commonsFree Image from public domain license