Water/Rock strategy: Fire control with a 4× Grass problem
Water/Rock and Rock/Water are the same defensive pairing; this page uses water-rock as the canonical URL. Water/Rock is a physical-pressure pairing that checks Fire, Flying, Ice, and Rock lanes but must respect Grass coverage. Representative Pokémon include Omanyte, Omastar, Kabuto, Kabutops, Drednaw. The standard type chart gives this combination 4× weak to Grass and 2× weak to Electric, Fighting, Ground. It has no type immunity under the standard chart. Its main defensive value comes from ¼× resists Fire; ½× resists Normal, Ice, Poison, Flying, but stats, ability, item, and format still decide whether a real Pokémon can use those entries repeatedly.
Offensive plan
Water STAB threatens Fire, Ground, and Rock targets, while Rock STAB pressures Flying, Fire, Ice, and Bug targets. Grass is the severe 4× weakness, and Electric, Fighting, and Ground also hit for 2×. The typing is strongest when it can punish Fire and Flying targets without giving Grass attackers free entry.
Counterplay and defensive risks
To counter Water/Rock, start with the chart pressure: Grass, Electric, Fighting, Ground. If a 4× weakness is listed, preserve that attack type before revealing it; if there is no 4× weakness, repeated 2× pressure and hazard chip usually matter more than a single surprise hit. Scout for abilities, Terastallization, weather, recovery, and pivot moves before assuming the visible multiplier ends the exchange.
Team-building advice
Water/Rock needs a dedicated Grass answer and support against Electric, Fighting, and Ground. Steel, Flying, Poison, Grass, and Dragon partners can cover those lanes while Water/Rock pressures Fire, Flying, and Ice structures. Use the Team Calculator to check whether the rest of the six stacks the same Grass, Electric problem, then compare the full defensive chart before choosing moves or teammates.
Read the best Pokémon type combinations guide for a side-by-side defensive comparison.
Continue with Type Chart, Dual Type Calculator, Water/Ground guide, and Ground/Rock guide.
Frequently asked questions
What is Water/Rock weak to?
Water/Rock is 4× weak to Grass and 2× weak to Electric, Fighting, Ground under the standard type chart.
Is Rock/Water a different type combination?
No. Rock/Water and Water/Rock use the same two types, so they share the same weaknesses, resistances, and immunities.
What is Water/Rock immune to?
It has no type immunity under the standard chart.