Horrors of the Deep

The deepest parts of the ocean are largely unexplored and hold untold terrors. This is a compiled lists of monsters designed for pathfinder to challenge your sea-faring PC's.

Caves
Hearthshell Sea-Snail (CR 20);

Coastal
Beaches and rocky shoals are home to many creatures here are a number of them in order from least to greatest CR.

Bloatfish (CR 1/4); Skin Gibberer (CR 1/2); Sea Fungus (CR 1); Surf Crab (CR 1); Salt Nixie (CR 2); Sea Lamp (CR 2); Plagued Gibberer (CR 3); Brine Goblin (CR 4); Forlorn Fisher's Net (CR 4); Sea Nixie (CR 4); Saline Ooze (CR 5); Broken One (CR 6/varies); Gibberer Mage (CR 6); Jelly Wisp (CR 6); Spiny Scavenger (CR 6); Brine Viper (CR 7); Drowning Beast (CR 8); Hungerer (CR 10); Giant Shuriken Fish (CR 11); Mutant Bluebottle (CR 12); Behemoth (CR 14); Poseidon Lantern (CR 18);

Depths
Ghost Shark (CR 20); Deep Sea Sahuagin (CR 22); Cave Kraken (CR 36);

Planar
Large Ink Elemental (CR 12); Huge Ink Elemental (CR 16); Greater Ink Elemental (CR 24);

Undersea Ruins
Insanity Stalker (CR 26); Buccaneer's Bane (CR 27);