The rolling haiku collaboration is an interactive linked poem on the World Wide Web composed of haiku or other short-form poems submitted over a very short time span by poets from around the world in response to a preset theme. It was conceived by Jim Kacian and members of The Haiku Foundation Board in 2015 and named the Earthrise Rolling Haiku Collaboration. Earthrise has been held each year on April 17, International Haiku Poetry Day, under THF sponsorship; themes have typically been keyed to United Nations–designated “international years” and encapsulated in a “seed haiku” chosen by THF.