If you leave a peepal leaf in water for 2-3 days, it decays but aquatic plants and their leaves remain healthy.
Aquatic plant:
Aquatic plants are plants that grow in water. Aquatic plants have special adaptation which helps them to survive in water.
Peepal tree:
Peepal tree is a terrestrial tree. It is adapted to live in the land.
Final answer:
The leaves of aquatic plants have a waxy coating in order to prevent the rotting of leaves in water. Peepal is a land plant it does not have mechanism to prevent rotting of leaves by water.