Gah! Shrimpzilla!

Percy Jackson, in The Mark of Athena

Skolopendra is a giant sea monster, part crayfish, part shrimp, and is one of Phorcys and Keto's children. Percy Jackson nicknamed it Shrimpzilla.

The Heroes of Olympus

The Mark of Athena

Leo Valdez, as captain of the Argo II, forgot to turn on the ship's detection system from radar to sonar so that Festus could detect any nearby monsters. If he had done that, the Skolopendra's arrival wouldn't have taken them by surprise. When it arrived, the Skolopendra tried to capsize the Argo II.

Before Percy could fight it, the Skolopendra pushed the son of Poseidon down the stairs using its tentacles, then wrapped around Piper McLean's legs and tried to drag her overboard. A tentacle slams into Frank Zhang, knocking the centurion overboard.

The Skolopendra withdrew after it got a "mouthful of fire" from Leo and Hazel's use of Greek fire. Leo and Hazel successfully destroyed the Skolopendra, nearly killing themselves in the process.


Keto (1)

Keto, the goddess who sent the Skolopendra to attack the Argo II.

It was the length of the Argo II, which was two-hundred-foot-long. It looked like a cross between a giant shrimp and a cockroach, with a pink chitinous shell, a flat crayfish tail and millipede-type legs. Its face was a slimy pink like an enormous catfish with two glassy dead eyes and a gaping toothless maw. It had a beard, which had a numerous amount of tentacles sprouting from each nostril.


  • According to some myths, the Skolopendra was the largest sea monster.
  • Its name means "centipede" or "millipede" in Latin.
  • Scolopendra is the name of a genus of centipede.
Species: Centaur | Cyclopes | Dragon | Drakon | Empousa | Fire-Breathing Horse | Giants | Gorgon | Harpy | Hyperborean Giant | Ichthyocentaur |

Katobleps | Laistrygonian Giant | Lycanthrope | Merpeople | Nikai | Nymphs | Pegasus | Satyr | Skolopendra | Stymphalian Birds | Telekhine | Blemmyae

Friendly Monsters: Argus | Blackjack | Briares | Chiron | Don | Ella | Festus | Gleeson Hedge | Gray |Grover Underwood | Hippocampus | Mellie | Mrs. O'Leary | Ophiotaurus | Peleus | Scipio | Tyson | Tempest
Enemy Monsters: Agrius and Oreius | Arachne | Basilisk | Charybdis and Scylla | Chimera | Chrysaor | Clazmonian Sow | Colchis Bull | Echidna | Euryale | Geryon | Joe Bob | Kampê | | Nanette | Manticore | Medusa | Minotaur | Nemean Lion | Polyphemus | Sphinx | Stheno | Typhon | Scythian Dracanae
Neutral Monsters: Carnivorous Sheep | Cerberus | Erymanthian Boar | Gray Sisters | Gorgons | Furies | Flesh-Eating Horse | Gryphon | Siren