You might assume that this watermelon here has been carved by hand, but actually is completely natural. This strange condition is known as “hollow heart”.

Hollow heart can happen due to poor pollination causing the watermelon to develop cracks internally. Cutting a watermelon, affected with hollow heart, across the body will reveal a well defined structure that may surprise those who aren’t familiar with the condition. Hollow heart is not a disease and the internal cracking has no negative impact on the watermelon’s taste or quality, and is entirely safe to consume.

Photo credit