This writhing mass is formed of countless jellyfish fused into interlocking, tentacled strands.
Fused jellyfish swarm
N Medium vermin (aquatic)
Init +1; Senses darkvision 60 ft.; Perception +0
AC 11, touch 11, flat-footed 10 (+1 Dex)
Speed swim 20 ft.
Str 10, Dex 13, Con 10, Int —, Wis 10, Cha 2
Environment any aquatic
Discorporate (Ex) A siphonophore dies when reduced to 0 or fewer hit points. When a siphonophore dies, unless its body has been completely destroyed, its remains immediately break apart to form a normal, full-strength jellyfish swarm.
Poison (Ex) Melee touch–injury; save Fort DC 16; frequency 1/round for 6 rounds; effect 1d4 Dex; cure 2 consecutive saves.