ocean_beach from https://freesound.org/people/blimp66/sounds/407430/
Licensed as Creative Commons Attribution.

jungle from https://freesound.org/people/aurelien.leveque/sounds/417635/
Licensed as Creative Commons 0

grassland from https://freesound.org/people/dsebeste/sounds/351609/
Licensed as Creative Commons 0

woods from 349035__craftcrest__spring-in-the-woods-front
Licensed as Creative Commons Attribution

desert from https://freesound.org/people/bruno.auzet/sounds/528081/
Licensed as Creative Commons 0

icesheet from https://freesound.org/people/DBlover/sounds/405601/
Licensed as Creative Commons 0

coniferous_forest from https://freesound.org/people/chris_dagorne/sounds/181359/
Licensed as Creative Commons 0

Savanna from https://freesound.org/people/reinsamba/sounds/58230/
Licensed as Creative Commons Attribution