Q.What is this creature in my garden?
I am sharing its photos I took just an hour ago. I have few of these in my garden. Each one is around 2-3 inches long and 1 inch wide. It moves really slow and I normally witness it during the night in wet/humid places of the garden. They hide during the day. Can you please tell me details about it and if it is safe for my garden?

Certified GKH Gardening Expert
Those are slugs. Essentially snails without shells. (They are a different species of course, but you get the idea)
They are a bad thing in your garden. This article will help you to get rid of them: https://www.gardeningknowhow.com/plant-problems/pests/insects/kill-garden-slugs.htm