5e SRD:Athletics Skill

Athletics.	Your  check covers difficult situations you encounter while climbing, jumping, or swimming. Examples include the following activities:


 * You attempt to climb a sheer or slippery cliff, avoid hazards while scaling a wall, or cling to a surface while something is trying to knock you off.
 * You try to jump an unusually long distance or pull off a stunt midjump.
 * You struggle to swim or stay afloat in treacherous currents, storm-tossed waves, or areas of thick seaweed. Or another creature tries to push or pull you underwater or otherwise interfere with your swimming.