The Deep End

 is the 6th episode of the 2002 He-Man and the Masters of the Universe series. It originally aired on October 4, 2002.

Summary
The story begins when Orko was wondering how Man-At-Arms' inventions work but Man-At-Arms told Orko not to touch any thing when the search of energy has them worried.

Meanwhile at Snake Mountain, Evil-Lyn told Skeletor about the Coridite Crystal and so Skeletor told his troops to find it but after finding out that Merman had it, he senda them to go after him. Meanwhile at the Sea of Rakash Man-At-Arms using his underwater armor to go underwater to find that crystal and make sure that Skeletor won't get his hands on it again.

Thanks to Evil-Lyn's Magic she and the others can breath under water and they all fight for the crystal when the Sea Beast ate both Man-At-Arms and the crystal that causes the sea beast to mutate into the even more of the monster.

He-Man must save Man-At-Arms from the belly of a sea beast while the defenders of Eternia stop the monster long enough for He-Man and Man-At-Arms to escape from the mouth of the beast and toss the crystal over the edge and He-Man absorbs the energy, temporally turning into a stone but he broke out of it. Meanwhile back at Snake Mountain, Skeletor after punishing Merman have wonders what inside Castle Grayskull was worth dying for.

Moral
Orko: "But what if you guys didn't get out of the fish in time? Huh, you and Man-At-Arms coulda-"

He-Man: "I knew the risks, Orko. But I wasn't about to leave Man-At-Arms behind, no matter what. Friends stick together through thick and thin. And being trapped in a creature's belly, well, it doesn't get any thicker than that."

Orko: "Yech. Or slimier or yuckier!" (He-Man laughs)

He-Man: "Until next time."

Heroic Warriors

 * Cringer
 * Battle Cat
 * He-Man
 * Prince Adam
 * Man-At-Arms
 * Orko
 * Mekaneck
 * Ram-Man
 * Stratos
 * Teela

Allies

 * Sorceress

Evil Warriors

 * Beastman
 * Clawful
 * Evil-Lyn
 * Skeletor
 * Merman
 * Panthor
 * Trap Jaw
 * Tri-Klops
 * Whiplash (non speaking role)

Locations

 * Castle Grayskull
 * Eastern Village
 * Eternos
 * Mystic Wall (mentioned)
 * Sea of Rakash
 * Snake Mountain

Vehicles

 * Attack Squid
 * Bashin' Beetle (under construction)
 * Battle Hawk

Artifacts

 * Coridite Crystal

Technology

 * Doomseeker

Cast

 * Cam Clarke as He-Man/Prince Adam
 * Kathleen Baar as Evil-Lyn
 * Lisa Ann Beley as Teela
 * Garry Chalk as Man-At-Arms
 * Brian Dobson as Skeletor and Buzz-Off
 * Paul Dobson as Trap Jaw and Tri-Klops
 * Gabe Khouth as Orko and Mekaneck
 * Scott McNeil as Stratos, Clawful, Beastman, Merman and Ram-Man
 * Nicole Oliver as Sorceress

Trivia

 * Writer Brooks Wachtel previously wrote the She-Ra: Princess of Power episode Hordak's Power Play.
 * Nicole Oliver is credited for voicing The Sorceress, even though the character doesn't have any lines.
 * This episode received an entry in Masters of the Universe Encyclopedia: Season One - Issue 1.