With Locke's light, Seymour can examine Jake's wound. It's not too bad, but it's bleeding a lot. Thankfully, your medical pouch has what you need to prevent infection, and staunch the wound.
While Seymour does that, Jake does his best to see under the waterline, to avoid a repeat incident. Unfortunately, a light on the surface just causes a lot of reflections, leaving what's under a mystery. All he can see are a few roots poking through the water...
Wait, did that white root move?
As he holds out Lackey to get a bit more light, Jake spots another moving white root... and another, and another...
A small head breaks the surface of the water, and Jake realize his blood has drawn a swarm of hungry pokémons...