A common tern (Sterna hirundo). Colour lithograph, ca. 1875. https://www.rawpixel.com/image/13970362/common-tern-sterna-hirundo-colour-lithograph-ca-1875Free Image from public domain licenseWhale tail in Sydney, Australia. Original public domain image from Wikimedia Commons https://www.rawpixel.com/image/3283600/free-photo-image-whale-swimmingFree Image from public domain licenseA large number of fresh-caught gray fish. Original public domain image from Wikimedia Commons https://www.rawpixel.com/image/3305661/free-photo-image-sardine-seafood-scalesFree Image from public domain licenseFree baby sea turtle on beach sand image, public domain animal CC0 photo. https://www.rawpixel.com/image/5919951/photo-image-background-public-domain-oceanFree Image from public domain licenseJellyfish with stripes. Original public domain image from Wikimedia Commons https://www.rawpixel.com/image/3305761/free-photo-image-minimal-smoke-medusaFree Image from public domain licenseChicxulub impact - artist impression (1994) painting by Donald E. Davis. Original public domain image from Wikipedia.… https://www.rawpixel.com/image/10540000/image-cloud-galaxy-moonFree Image from public domain licenseA whale being speared with harpoons by fishermen in the Arctic sea. Engraving by A. M. Fournier after E. Traviès. https://www.rawpixel.com/image/13964725/image-cartoon-person-artFree Image from public domain licenseFree starfish skeleton image, public domain animal CC0 photo. https://www.rawpixel.com/image/5901391/photo-image-white-background-public-domain-shadowFree Image from public domain licenseHumpback whale underwater, Marine mammal. Original public domain image from Flickr https://www.rawpixel.com/image/8752677/photo-image-public-domain-ocean-seaFree 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 licenseMenges fish from sand pond, Livingston Manor, New York (1977) photography in high resolution by John Margolies. Original… https://www.rawpixel.com/image/3799942/photo-image-person-vintage-retroFree Image from public domain licenseGreen sea turtle from turtle farms in Isla Mujeres, México. Original public domain image from Wikimedia Commons https://www.rawpixel.com/image/3282800/free-photo-image-sea-life-farm-animalFree Image from public domain licenseA duck billed platypus (watermole). Colour lithograph after W. Kuhnert. https://www.rawpixel.com/image/13970018/duck-billed-platypus-watermole-colour-lithograph-after-kuhnertFree Image from public domain licenseThe natural history of Carolina, Florida and the Bahama Islands: containing the figures of birds, beasts, fishes, serpents… https://www.rawpixel.com/image/13952842/image-cartoon-plants-treesFree Image from public domain licenseA Bowhead whale resting on a sandbank. Chromolithograph by F. Gerasch after A. Gerasch, 1860/1880. https://www.rawpixel.com/image/13951623/image-art-sea-animalFree Image from public domain licenseExotic marine lives. Original public domain image from Wikimedia Commons https://www.rawpixel.com/image/3284930/free-photo-image-swim-marine-life-animalFree Image from public domain licenseThe skull: anterior view (above) and lateral view (below). Line engraving by A. Bell after J.-J. Sue, 1798. https://www.rawpixel.com/image/13968725/image-person-art-skullFree Image from public domain licenseSharks and Fish. Original public domain image from Wikimedia Commons https://www.rawpixel.com/image/3282886/free-photo-image-public-domain-animal-shark-sea-wildlifeFree Image from public domain licenseA polar bear is devouring its prey, a seal, on an ice floe in the Arctic sea while three arctic foxes watch eagerly from an… https://www.rawpixel.com/image/13951600/image-dog-cartoon-artFree Image from public domain licenseSaraswati sitting on a lotus with her elephant fish. Coloured lithograph. https://www.rawpixel.com/image/13970203/saraswati-sitting-lotus-with-her-elephant-fish-coloured-lithographFree Image from public domain licenseAbove, fishermen hunting a spermwhale; middle, indigenous huntsmen hunting kangaroos; below, an island populated by petrels… https://www.rawpixel.com/image/13966544/image-dog-penguin-cartoonFree Image from public domain licenseA narwhal, a common whale and a pike-headed whale. Etching by J Scott, ca 1812, after S Edwards. https://www.rawpixel.com/image/13970060/image-cartoon-sea-animalFree Image from public domain licenseZoo Berlin, Berlin, Germany. Original public domain image from Wikimedia Commons https://www.rawpixel.com/image/3286893/free-photo-image-jellyfish-fish-animalFree Image from public domain licenseA profile of a man bisected with a curve for measuring the brain, skulls of a Turk (top right), a Georgian woman (bottom… https://www.rawpixel.com/image/13965801/image-face-person-artFree Image from public domain licenseTeeth and jawbones of a horse: 34 figures. Coloured engraving by J. Pass after Harguinier, 1805. https://www.rawpixel.com/image/13966951/image-horses-wood-animalFree Image from public domain licenseSeashell on the seashore. Original public domain image from Wikimedia Commons https://www.rawpixel.com/image/3286509/free-photo-image-cc0-animal-beachFree Image from public domain licenseA lobster and a fish. Gouache painting by an Indian artist, 18--. https://www.rawpixel.com/image/13952559/lobster-and-fish-gouache-painting-indian-artist-18Free Image from public domain licenseAn ideal scene of the Lias period with two sauropods in the sea. Wood engraving by Riou. https://www.rawpixel.com/image/13951394/image-cartoon-person-artFree Image from public domain licenseThe World's Columbian Exposition of 1893, Chicago: a view of the Peristyle. Chromolithograph with gouache after a painting… https://www.rawpixel.com/image/13959121/image-horse-plant-personFree Image from public domain license Part of the "Fisherman's Dream" exhibit, one of several scrap-metal sculpture installations by… https://www.rawpixel.com/image/8068485/photo-image-cloud-book-artFree Image from public domain licenseMount Fuji seen through the waves at Manazato no hama, in the Izu Penisula, south of the mountain. Colour woodcut by… https://www.rawpixel.com/image/13952744/image-person-book-artFree Image from public domain licenseSkull of an Ethiopian person: three figures. Chromolithograph by H.J. Ruprecht, 1877. https://www.rawpixel.com/image/13951013/image-face-person-skullFree Image from public domain licenseA beaked whale blowing a fountain of water through its snout. Coloured engraving, ca 1815. https://www.rawpixel.com/image/13951896/image-cartoon-art-seaFree Image from public domain licenseThree squirrel fish swimming in the sea. Colour line block after H. Murayama. https://www.rawpixel.com/image/13952257/three-squirrel-fish-swimming-the-sea-colour-line-block-after-murayamaFree Image from public domain licenseAstrology: constellations, the Great Bear. Coloured engraving. https://www.rawpixel.com/image/13963825/astrology-constellations-the-great-bear-coloured-engravingFree Image from public domain licenseCaptain David Thomas, right, and the crew of "Just a'Pluggin" offloading a haul of lobster onto the floating dock of the… https://www.rawpixel.com/image/3306923/free-photo-image-lobster-fisherman-animalFree Image from public domain license