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Poseidon's Cabin (#3) is the cabin that houses the demigod offspring of Poseidon.


Percy in his cabin in the graphic novel.

Poseidon's cabin is low, long and solid, with all the windows facing the sea. The outer walls are rough gray stone with pieces of seashell and coral and look like the bottom of the ocean floor.

On the inside, it has six empty bunk beds and the walls glow like abalone. Tyson later adds a few bronze hippocampi on the ceiling as decorations, along with unknown underwater plants and corals, sitting in the window sill, "more beautiful than the Demeter kids could whip up." Later, Poseidon adds a fountain made out of gray sea rock with a fish that spouts the water from its mouth and coral decoration. The bottom was filled with golden drachmas for Iris Messages, although it is unknown if the coins will ever run out. Percy later sliced the fountain in half in The Battle of the Labyrinth.

When he moves into the cabin, Percy hangs his Minotaur's Horn up on the wall which is Percy's first spoil of war collected in The Lightning Thief and his only possession at the time aside from a toiletries bag and a set of spare clothes. It is mentioned to still hang there in The Titan's Curse and although it's not mentioned further, it presumably still continues to hang in the cabin. In The Titan's Curse, Percy is shown to hang his shield up next to the horn.

Graphic Novels

In the graphic novel, the cabin has a sea shell over the door and waves on the top. A nightstand sits next to the bunk and a lamp is stuck to the wall near the top bunk. The fountain appears to be made of a red sea rock. A light blue couch sits next to the window.

In The Battle of the Labyrinth graphic novel, the cabin appears as looking like a Greek temple with columns, waves on the top, and a trident over the door. The bunks have light blue bed sheets with waves on them and two seashells next to the door on either side.


The inside of Poseidon's cabin in the film adaptation.

In the film adaptation, Poseidon's cabin is open and wooden with a Trident over the entryway and two banners with a Trident on it and says Poseidon's Cabin on it. There are also tent canvases on the windows for privacy. Inside the cabin, it has a hammock, chairs, desks, a life-sized metal Trident, scrolls, and a book. There is also a steering wheel, a telescope, and lanterns. The cabin leads to a personal dock. The cabin is built near the beach and has an excellent view of the lake.

Percy Jackson and the Olympians

The Lightning Thief

After arriving at Camp Half-Blood, Percy Jackson notices the cabin and its significance is explained to him along with why it's empty.

After Percy is claimed by Poseidon, he moves into the cabin along with his few possessions, including his Minotaur's Horn which Percy hangs up on the wall.

The Sea of Monsters

When Percy returns to camp, he moves back into the cabin.

As the campers try to figure out where to have Tyson the Cyclops live, he is suddenly claimed by Poseidon. As a result, much to Percy's annoyance, Tyson moves into the cabin with his new half-brother. After they get closer during the Quest for the Golden Fleece, this becomes easier. At the end of the summer, Tyson leaves for Poseidon's palace at the bottom of the sea.

The Titan's Curse

Percy resides in the cabin during the winter after returning from Westover Hall with Bianca and Nico di Angelo until he leaves on the Quest for Artemis. During this time, Percy uses the Saltwater Fountain which Poseidon had added to the cabin while he was gone to communicate with his mother and Tyson via Iris Messages. Tyson later reveals that he is returning to camp for the summer.

The Battle of the Labyrinth

Following Tyson's return, he and Percy once again share the cabin over the summer. Percy receives Iris Messages from Bianca di Angelo showing him what Nico is up to. After Nico starts summoning the dead, it causes the cabin to shake and Percy is forced to destroy the fountain with Riptide to end it.

The Last Olympian

After the destruction of the Princess Andromeda, Percy returns to camp and lives in the cabin again before and after the Battle of Manhattan.

Known occupants


Children of Poseidon are some of the most powerful demigods alive since their father is one of the Big Three Olympian gods. Cabin members may have some or all of the following:

  • Atmokinesis: They have limited control over the weather. They can create small hurricanes and storms to attack others or for defense.
  • Hydrokinesis: The ability to control water with the mind. They can will themselves to stay dry in water, extract water shoot from petrified seashells, create oxygen bubbles underwater for people who cannot breathe underwater, and harden water to form solid ground to walk on or shields. They even can make giant fists of water that mimic whatever they do, which can be used to grab enemies or smash them into the ground.

    Poseidon, their father

    • Cryokinesis (limited): They have very limited control over ice; such as create an icy hurricane to attack all nearby monsters.
    • Vitakinesis (limited): They can use water to strengthen themselves and heal most wounds, the amount of water and time needed for the healing being proportionate to the severity of the wound.
    • Water Immunity: If they fall into the water, they will be immune to water pressure. Additionally, they can breathe underwater for unlimited amounts of time and see in the darkness underwater.
    • Heat Immunity (limited): They have a higher resistance to fire and burns than regular people.
  • Watercraft Manipulation: When they are in saltwater, they always know their exact nautical coordinates, wherever they are such as in water or on a ship or boat. They have the telekinetic ability to control boats and ships. They also know exactly how to work the boats and what all the parts do. However, they have so far only shown control over sailing vessels and similar boats. They can also keep a boat together through sheer willpower alone.
    • Perfect Bearings: They always know their exact nautical coordinates wherever they are, which allow them to easily navigate their way at sea.
    • Instinctive Understanding of Sailing: They have an instinctive understanding of sailing, letting them know which ropes to hoist, which sails to raise and which direction to steer. They can even detect what speed they are moving at and understand just how fast that is.
  • Aerokinesis (limited): They have limited control over the wind. They can summon strong winds, which allow them to create miniature hurricanes and typhoons.
  • Electrokinesis (limited): They have limited control over lightning, such as sparks as their hurricane increases in power. Their control, however, is far less than that of a child of Zeus.
  • Geokinesis (limited): They have a limited amount of control over the earth. They can create earthquakes as their father is known for creating them.
  • Communication: They have divine authority over their father's subjects and can speak both telepathically and normally with each other underwater.
    • Zoolingualism (limited to Equestrians and Marine Life): They can understand and talk to marine animals, equines, and similar creatures.

Legacy Powers

Some legacies of Poseidon have different powers. If a legacy of Poseidon is from the line from Periclymenus, they can shapeshift into animals. Other Legacies won't have this ability. It is unknown if Legacies of Poseidon will have Hydrokinesis or any of the other powers children of Poseidon have displayed, as Frank Zhang didn't appear to be able to use it, though this maybe because it is mentioned Poseidon blessed their family line with the power and it wasn't by chance.

Magic Items


The Lightning Thief

Although not said to be the cabin, Percy stays in an open cabin by the beach built by his father, Poseidon. Chiron stated that Poseidon built it just for Percy, although he might have just meant all of his children. Still, he had no other demigod children. In the cabin, there was a life-sized trident and many other helpful objects that Percy could use. The cabin gave an excellent view of the ocean.



  • Poseidon's cabin is tied with Zeus' Cabin for having the second least amount of known possible inhabitants, with each cabin having only two inhabitants each.
    • However, now that Thalia Grace is a Hunter, she would stay in the Artemis' Cabin, meaning that Poseidon's Cabin has the second least amount of occupants.
1st: Zeus Jason Grace | Thalia Grace (Temporarily)
2nd: Hera None: "Hera doesn't run around having affairs with mortals. That is her husband's job."
3rd: Poseidon Percy Jackson | Tyson
4th: Demeter Katie Gardner | Miranda Gardiner | Meg McCaffrey | Billie Ng
5th: Ares Arnold Beefcake | Clarisse La Rue | Sherman Yang | Mark | Ellis Wakefield
6th: Athena Bea Wise | Annabeth Chase | Malcolm Pace
7th: Apollo Lee Fletcher | Michael Yew | Will Solace | Kayla Knowles | Austin Lake | Yan | Gracie | Jerry
8th: Artemis Hunters of Artemis
9th: Hephaestus Charles Beckendorf | Jake Mason | Leo Valdez | Nyssa Barrera | Christopher | Harley | Shane
10th: Aphrodite James Dean | Silena Beauregard | Piper McLean | Drew Tanaka | Lacy | Mitchell | Valentina Diaz
11th: Hermes Luke Castellan | Connor Stoll | Travis Stoll | Chris Rodriguez | Cecil Markowitz | Alice Miyazawa | Julia Feingold
12th: Dionysus Castor | Pollux
13th: Hades Nico di Angelo
14th: Iris Butch Walker
15th: Hypnos Clovis
16th: Nemesis Damien White
17th: Nike Laurel Victor | Holly Victor
18th: Hebe Paolo Montes
19th: Tyche Chiara Benvenuti
20th: Hecate Lou Ellen Blackstone