Clampseed #562.413 WATERGRASS Clampseed bury themselves in the dirt at the start of Autumn in order to keep warm while hibernating. Farmers often have trouble removing them from their fields due to their barbed shell shards. dragon_hunter_70 They stick their spikes into cave walls and absorb the minerals they find in the rock. A Clampseed slams its shell closed on prey to prevent escape. Auto-spliced Pokédex Entry HP 38 Attack 54 Defense 89 Speed 17 Special Attack 57 Special Defense 65 Total 320 Height 50 cm Weight 35.6 kg Category Thorn Bivalve Pokémon