- Katy Ayers, Ashley Gordon
- 2.3 metre(s)
- United States (Grand Island)
The longest fungal mycelium boat measures 2.30 m (7 ft 6 in), achieved by Katy Ayers and Ashley Gordon (both USA) in Grand Island, Nebraska, USA, on 6 September 2019.
Ayers, who was a student in Columbus at the time, grew the canoe using fungus and it sprouts new mushrooms every time she takes it out on the water. She has named the boat ‘Myconoe’. Ayers collaborated with local mushroom company owner Ash Gordon on the project.