Water Absorb is a Pokémon ability introduced in the third generation. It restores HP from Water attacks.
When a Pokémon with Water Absorb is hit by a Water move, its HP is recovered by 1 quarter of its full HP and the move will have no effect. If the Pokémon is already at full HP, the Water move will simply have no effect. Water Absorb does not activate if the Pokémon is already being protected.
If a Pokémon with Water Absorb is holding an Absorb Bulb or Luminous Moss, Water Absorb activates before the held item's effect and its consumption.