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He crossed 26 miles in a kayak made from mushrooms – and lived to tell the tale
(www.theguardian.com)
TLDR; he cultivated some mycelium from a mushroom called “Ganoderma polychromum mycelium outside his Los Angeles studio”. Used a hemp substrate around a fiber glass boat mold, and then dried it over several months. He calls the resulting material AquaFung.
Great start, but coming in with a kayak weight of 107 lbs compared to most kayaks being below 45lbs will give them quite the challenge to overcome with this AquaFung, but it’s pretty promising.