Cetacean needed: Wikipedia whale diagram needs line-art

The missing elements in the diagram on the Wikipedia page for List of cetaceans is missing some line-art of various whales and such. Where the art is missing, the box simply bears the legend "cetacean needed." (ObRef XKCD)

Nice work editor of https://en.wikipedia.org/wiki/List_of_cetaceans … - missing diagrams labeled 'cetacean needed' @doctorow pic.twitter.com/B18yrKrJvI

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