Sea Snake Venom (poison) Saving Throw DC 16 Fortitude
Maximum Duration 4 rounds
Stage 1 1d6 poison damage (1 round)
Stage 2 1d6 poison damage and Enfeebled 1 (1 round)
Source: Pathfinder Monster Core 2
Running this fight? Add the sea snake to the initiative tracker: type its name and the AC, hit points and Perception for initiative fill in, and the book button shows this stat block mid-fight.