Hdri view 180/360, for 3d scenes, as the environment and good enough to be used as the actual background.
For more info on each skydome included in this pack, please follow the links below:
http://3docean.net/item/sea-11/677026
http://3docean.net/item/sea-12/697123
http://3docean.net/item/sea-13/697291
http://3docean.net/item/sea-14/1054394
http://3docean.net/item/sea-15/1054466
http://3docean.net/item/sea-16/1111871
http://3docean.net/item/sea-17/1263788
http://3docean.net/item/sea-18/1272201