Spots On My Marrows

Could it be where water has been splashed on the fruits as they were growing?

i wouldn't say we've really had any rain until the last couple of weeks, when i guess the skins should have toughened. definitely not had any hail stones until today, but they are now in the garage.

my main concern is about the storage of them. i have far more than i need and would rather give the surplus away than waste them, but obviously don't want to give some away and find all the later ones i've kept rot away and left short.