Pokemon Scarlet & Violet's open world gameplay means more Pokemon to catch and more Pokemon to battle. With three different storylines, you want to have more than one team at your disposal. Pokemon with unique dual-typing can come in handy when battling Team Star and the Gym Challenge. One that you may consider is Dragalge, the Poison/Dragon-type that evolves from Poison/Water-type Skrelp. Given their habitat, you'll need to have the ability to swim if you want to catch the Mock Kelp Pokemon.