A U.S. Marine Corps UH-1Y Venom provides urban close air support at Yodaville, Yuma, Ariz., on Oct. 2, 2015. https://www.rawpixel.com/image/8728310/photo-image-public-domain-bird-natureFree Image from public domain licenseU.S. Marine Corps Lance Cpl. Jonathan Perez, a rifleman with Charlie Company, Battalion Landing Team, 1st Battalion, 4th… https://www.rawpixel.com/image/8741570/photo-image-public-domain-personFree Image from public domain licenseSnake by Kōno Bairei (1844-1895). Digitally enhanced from our own original 1913 edition of Barei Gakan. https://www.rawpixel.com/image/459419/free-illustration-image-snake-japan-serpentFree Image from public domain licenseGreater Weever or Sting-bull from The Natural History of British Fishes (1802) by Edward Donovan. Original from the New York… https://www.rawpixel.com/image/431250/free-illustration-image-antique-aquatic-art-public-domainFree Image from public domain licenseA U.S. Marine Corps AH-1Z Viper helicopter assigned to Marine Light Attack Helicopter Squadron (HMLA) 169, Marine Aircraft… https://www.rawpixel.com/image/8727993/photo-image-fire-public-domain-personFree Image from public domain license