Dolphin is a common name of aquatic mammals within the infraorder Cetacea. The term dolphin usually refers to the extant… https://www.rawpixel.com/image/4021369/photo-image-ocean-nature-cuteFree Image from public domain licenseDolphin at playDolphins are a widely distributed and diverse group of aquatic mammals. They are an informal grouping within… https://www.rawpixel.com/image/4022500/photo-image-ocean-sea-waterFree Image from public domain licenseWhale 1, Edo period (18th-19th century) illustrated by Daderot. Original public domain image from Wikimedia Commons.… https://www.rawpixel.com/image/10184761/image-art-illustration-animalFree Image from public domain licenseSharks png illustration, transparent background. Free public domain CC0 image. https://www.rawpixel.com/image/9778936/png-white-background-peopleFree PNG from public domain licenseMonkey Mia Dolphin Resort, Monkey Mia, Australia. Original public domain image from Wikimedia Commons https://www.rawpixel.com/image/3287064/free-photo-image-australia-animal-animals-images-picturesFree Image from public domain licenseShark png illustration, transparent background. Free public domain CC0 image. https://www.rawpixel.com/image/9778932/png-white-background-peopleFree PNG from public domain license