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Eurypterid, Spiny

Spiny Eurypterid Creature5

N Large Amphibious Animal

Senses Perception +10; darkvision, wavesense (imprecise) 30 feet

Skills Athletics +13, Stealth +13

Str +4, Dex +2, Con +5, Int -5, Wis +1, Cha -3

AC 22; Fort +16, Ref +11, Will +10

HP 70

Attack of Opportunity [reaction] Stinger only.

Chitinous Spines A creature grabbed by the spiny eurypterid takes 2d6 piercing damage at the start of that creature’s turn.

Speed 40 feet, swim 40 feet

Melee [one-action] pincer +15, Damage 2d8+4 slashing plus Grab

Melee [one-action] stinger +15, Damage 2d6+4 piercing plus spiny eurypterid venom

Spiny Eurypterid Venom (poison) Saving Throw Fortitude DC 22; Maximum Duration 6 rounds; Stage 1 1d8 poison damage and enfeebled 1 (1 round); Stage 2 1d8 poison damage and enfeebled 2 (1 round); Stage 3 2d8 poison damage and enfeebled 3 (1 round)


Spiny eurypterids are aggressive, tenacious, and utterly unwilling to stop chasing prey, even to their own detriment. These creatures are covered with countless needle-like spikes and can grow to rival the size of ocean mammals like orcas.

Sailors often find them clinging to the hulls of ships, as spiny eurypterids mistake them for prey and are too stubborn to let go.

Section 15: Copyright Notice

Pathfinder Bestiary 3 (Second Edition) © 2021, Paizo Inc.; Authors: Logan Bonner, James Case, Jessica Catalan, John Compton, Paris Crenshaw, Adam Daigle, Katina Davis, Erik Scott de Bie, Jesse Decker, Brian Duckwitz, Hexe Fey, Keith Garrett, Matthew Goodall, Violet Gray, Alice Grizzle, Steven Hammond, Sasha Laranoa Harving, Joan Hong, James Jacobs, Michelle Jones, Virginia Jordan, Tj Kahn, Mikko Kallio, Jason Keeley, Joshua Kim, Avi Kool, Jeff Lee, Lyz Liddell, Luis Loza, Ron Lundeen, Philippe-Antoine Menard, Patchen Mortimer, Dennis Muldoon, Andrew Mullen, Quinn Murphy, Dave Nelson, Jason Nelson, Samantha Phelan, Stephen Radney-Macfarland, Danita Rambo, Shiv Ramdas, Bj Recio, Jessica Redekop, Mikhail Rekun, Patrick Renie, Alex Riggs, David N. Ross, Simone D. Sallé, Michael Sayre, Mark Seifter, Sen.H.H.S, Abigail Slater, Rodney Sloan, Shay Snow, Pidj Sorensen, Kendra Leigh Speedling, Tan Shao Han, William Thompson, Jason Tondro, Clark Valentine, Ruvaid Virk, Skylar Wall, Andrew White, and Landon Winkler.