Cafodd yr her ei chyhoeddi gan y Prif Weinidog Mark Drakeford ym mis Mawrth 2023 pan ddywedodd y byddai'n neilltuo cyllid ar gyfer o leiaf tri phrosiect i ymchwilio i dechnoleg morlynnoedd llanw.
The challenge was announced by First Minister Mark Drakeford in March 2023 where he said the funding would be made available for at least three research projects working on tidal lagoon technology.