Deep Sea Scale is an item in the “Species-specific” category (Items). It costs ₽2000.
In-game descriptions
| Ruby / Sapphire · Emerald | A hold item that raises the SP. DEF of CLAMPERL. |
|---|---|
| FireRed / LeafGreen | An item to be held by a POKéMON. A scale that shines a faint pink. It raises the SP. DEF stat. |
| Diamond / Pearl · Platinum · HeartGold / SoulSilver | An item to be held by CLAMPERL. A scale that shines a faint pink, it raises the Sp. Def stat. |
| Black / White · Black 2 / White 2 | An item to be held by Clamperl. A scale that shines a faint pink, it raises the Sp. Def stat. |
| X / Y · Sun / Moon · Ultra Sun / Ultra Moon · Let’s Go, Pikachu! / Let’s Go, Eevee! · Sword / Shield | An item to be held by Clamperl. This scale shines with a faint pink and raises the holder’s Sp. Def stat. |
Where to find it
Not placed on the atlas maps (so far: Red/Blue and Generation 3).
Sources : PokeAPI (items, item_flavor_text, machines) · atlas · pokeemerald species_info.h