Found 24 Beach CC0 textures in library

Aerial Beach 01
Aerial Beach 02
Aerial Beach 03
Coast Sand 01
Coast Sand 02
Coast Sand 03
Coast Sand 04
Coast Sand 05
Ground 027
Ground 029
Ground 033
Ground 034
Ground 035
Ground 052
Ground 054
Ground 055 L (Large)
Ground 055 S (Small)
Ground 056
Ground 057
Ground 059
Ground 060 (Sand with shells)
Ground 061 (Lightly Wet Sand)
Shell Set 001
Shells 001