Emperor Shōwa was a scholar of biology, and was one of the many who praised Kumagusu’s accomplishments.
On June 1, 1929, at the request of the Emperor who was interested in slime molds, Kumagusu escorted his Majesty on the island of Kashima, and gave a lecture on the biology of Tanabe Bay on the Emperor’s ship.
For Kumagusu, this was the proudest day of his life. The following year, Kumagusu composed a Waka poem to be inscribed on a monument commemorating the imperial visit. The poem suggest that the forest on Kashima forever be protected.
Later, during a 1962 imperial visit to Wakayama, Emperor Shōwa composed a Waka poem on the memory of Kumagusu. A monument inscribed with this Waka was erected, which now stands in front of the Minakata Kumagusu Museum.