Kraken

Primordial, tentacled leviathans the size of war galleons. They live in the lightless depths of the deep ocean.

AC 18, HP 80, ATK 4 tentacle (near) +9 (2d12) or 1 storm or 1d4 lightning bolt, MV double near (swim), S 6, D 3, C 4, I 4, W 3, Ch 4, AL C, LV 17

Impervious. Electricity immune.

Crush. Tentacle attacks deal double damage against objects.

Lightning Bolt. Straight line (5' wide) extending far from kraken. DC 15 DEX or 6d6 damage.

Storm. Seas become violently turbulent in 1 mile radius around kraken. Lasts 2d4 rounds. Seaborne vessels have a 1:6 chance of capsizing each round.