Zoologist, media consultant, and science writer, Dr Karl Shuker is also one of the best known cryptozoologists in the world. He is the author of such seminal works as Mystery Cats of the World (1989), The Lost Ark: New and Rediscovered Animals of the 20th Century (1993; greatly expanded in 2012 as The Encyclopaedia of New and Rediscovered Animals), Dragons: A Natural History (1995), In Search of Prehistoric Survivors (1995), The Unexplained (1996), From Flying Toads To Snakes With Wings (1997), Mysteries of Planet Earth (1999), The Hidden Powers of Animals (2001), The Beasts That Hide From Man (2003), Extraordinary Animals Revisited (2007), Dr Shuker's Casebook (2008), Karl Shuker's Alien Zoo: From the Pages of Fortean Times (2010), Cats of Magic, Mythology, and Mystery (2012), Mirabilis: A Carnival of Cryptozoology and Unnatural History (2013), Dragons in Zoology, Cryptozoology, and Culture (2013), The Menagerie of Marvels (2014), A Manifestation of Monsters (2015), Here's Nessie! (2016), and what is widely considered to be his cryptozoological magnum opus, Still In Search Of Prehistoric Survivors (2016) - plus, very excitingly, his first two long-awaited, much-requested ShukerNature blog books (2019, 2020).

Dr Karl Shuker's Official Website - http://www.karlshuker.com/index.htm

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Sunday 13 January 2013


It was with great sorrow that I learnt earlier this week that Ivan Mackerle, the Czech Republic's pre-eminent cryptozoological and Fortean researcher-explorer as well as a longstanding friend and correspondent of mine, died on 3 January after a long illness. He was 71.

Ivan alongside an information board concerning Austria's Tappenkarsee lindworm

During more than four decades of investigations worldwide, Ivan sought a wide range of cryptids, including the Alpine tatzelworm and Tappenkarsee lindworm, the New Guinea ropen, the Loch Ness monster, the thylacine on mainland Australia, the Brazilian troa, the Sri Lankan nittaewo, and even Madagascar's giant elephant bird and man-eating tree. And although, sadly, he never succeeded in encountering any of his ultra-elusive quarries, he gathered considerable quantities of very valuable anecdotal and hitherto-unpublicised background information for each one.

Ivan seeking Madagascar's infamous man-eating tree

Ivan also examined many non-cryptozoological anomalies, such as the fate of the lost explorer Lieut.-Col. Percy Fawcett, Dracula's castle, the singing fishes of Batticaola, the mysterious 'cauldrons' in Siberia's Valley of Death, the ruins of Nan Madol in Micronesia, and the Czech Republic's very own historical enigma - the golem of Prague. And he meticulously documented all of his researches and findings in his many books, articles, and the films of his expeditions that he always produced.

Tajemství Pražského Golema - Ivan's book on the golem of Prague

However, he will be remembered above all else for his diligent, ground-breaking trio of expeditions to the Gobi Desert in search of the terrifying Mongolian death worm or allghoi khorkhoi. Today, it is unquestionably one of the world's most famous cryptids, yet it was virtually unknown to the West before Ivan first brought it to widespread popular attention via a World Explorer article in 1994.

Dr Jarda Prokopec and Ivan (on right) seeking the death worm in the Gobi Desert

In addition, Ivan actively encouraged my own interest in this remarkable cryptid, very kindly providing me with numerous documents and translations from Mongolian publications never before chronicled in English-language works, and always permitting me to incorporate in my own writings any of his expedition photographs and other illustrations prepared by him that I wished to use. Thank you, Ivan - I am and shall always be sincerely grateful to you for your generosity.

Mongolské Záhady - Ivan's book documenting the death worm and other Mongolian mysteries

The world is a sadder, less exciting place when pioneering, trail-blazing figures like Ivan depart from it. However, his legacy will live on not only in his publications and films but also in those many future generations of anomaly seekers inspired by him - not least of whom is his own son, Danny, now almost 50 years old, who accompanied him on several of his later expeditions.

Příšery Odnikud ('Monsters From Nowhere') - one of Ivan's books devoted to cryptozoological mysteries

Goodbye Ivan, I am so sorry that you are no longer here, but I pray that you now have the answers to all of those fascinating mysteries that you pursued for so long and for which we who remain here still strive. RIP my friend.

NB - All photographs included in this ShukerNature tribute article are © Ivan Mackerle


  1. I don't think anything more can be said except sorry.

  2. I met Ivan twice, he was a wonderful guy. What a great explorer too. He went to places few of us, even in cryptozoology, have been to and investigated some of the most obscure cryptids.

  3. His passing is a great loss, both as a human being and a cryptozoologist. Hopefully one day his books will see translated editions to honour his work.

    Best regards,