Surf: Honeycalm Island (5%), Honeycalm Sea (5%), Insular Sea (5%) + 2 more
Max Raid Battle: Honeycalm Sea (Only in Sword), Insular Sea (Only in Sword), Stepping-Stone Sea (Only in Sword) + 1 more
Its base catch rate is 225 out of 255 (higher is easier); the catch rate calculator works out your odds with each ball. For the look, the best colour match is Quick Ball or Dive Ball.
Evolution: Clauncher → Clawitzer (Level 37).
Clauncher in every game · Pokémon Sword & Shield interactive map (Galar)