agricultural agriculture berry citrullus lanatus cucurbita dark green elongated endocarp exocarp firm fleshy food fruit green healthy juicy melon mesocarp moist mottled nutritious pepo red rind rockmelon round seeds shape skin smooth sucrose sugars surface sweet texture variations vine water melon watermelon white abstract appearance Australian background bare bark brown colors colours cracked cracks dry edge edges eucalypt eucalypts gray grey grooves layers lines peeling rough self-shedding shadows shapes shedding sunlight textured textures tree tree trunk trunk uneven wallpaper wood