How to Get Dragon Scale in Pokémon GO will help you evolve your Seadra.
If you participated in the Horsea Spotlight Hour earlier this week, you'll likely be wondering how you can evolve them into Kingdra. Horsea evolves into Seadra with 25 Candy, and again into Kingdra with 100 Candy and a Dragon Scale.
How to Get Dragon Scale in Pokémon GO
Dragon Scales are evolution items that are a little tough to get your hands on. They're actually only used on Seadra, so you're probably unlikely to notice you need one until you want Kingdra.
You can get a Dragon Scale by spinning PokéStops, but you have a very low chance of rolling one. It's rumored that getting a seven-day PokéStop streak will guarantee an evolution item, but even then there's no sure way to know that you'll get a Dragon Scale.
Is Kingdra worth the trouble? It's the only Water and Dragon type Pokémon in the game besides Palkia currently, and fills a similar role in the Great and Ultra Leagues. It features a unique double resistance to Fire and Water, so it can fill a niche if your team can use it.
Kingra loses some of it's bulk from the main series in the transition to GO, but it makes up for it with good coverage with Water, Dragon and Ice moves.