Did you know that most aquariums and zoos have free, printable coloring pages? National Geographic even has a whole printable coloring book! Most of them include fun facts, like did you know that sea otters cuddle to stay together as the ocean moves?
My favorites are the Monterey Bay Aquarium, National Geographic Kids, and zoowithus.com. I also really enjoy not having to find parking. Zoo with Us has a list of major zoos with links to their coloring pages.
https://zoowithus.com/zoo-coloring-pages/
https://www.montereybayaquarium.org/for-educators/learning-at-home/crafts-and-printables/coloring-pages
https://kids.nationalgeographic.com/crafts/article/animal-coloring-pages