A large land snail, most likely Achatina. It is a notorious invasive species around the world, and India is no exception to it.
50.8mm in length.
Commonly found in flower pots, banana trees, compost heap
Saw this huge snail. Added a guitar pick for scale
Achatina fulica is a species of land snail in the family Achatinidae known commonly as the giant African snail or giant African land snail. It thrives in many types of habitat in areas with mild climates, it feeds voraciously and vectors plant pathogens, causing severe damage to agricultural crops and native plants, it competes with native snail taxa, it is a nuisance pest of urban areas, and it spreads human disease. It is listed as one...