TV Undiscovered Worlds with Steve Backshall Undiscovered Worlds with Steve Backshall 9/10 by 1 users Steve Backshall ventures into uncharted territory. Details Casts Posters Images Title Undiscovered Worlds with Steve Backshall Alternative Titles First Air Date 2019-04-21 Last Air Date 2019-05-12 Number of Episodes 4 Number of Seasons 2 Genres Documentary, Networks , Casts Plot Keywords ,