Watch S3, EP5: The Great Plankton Menace with Fubo for $0 Today
Dr. Bulthrod's plane, carrying precious specimens of a rare plankton, is shot down; the plankton escapes into the sea, where it grows and threatens to engulf the entire Earth.
Dr. Bulthrod's plane, carrying precious specimens of a rare plankton, is shot down; the plankton escapes into the sea, where it grows and threatens to engulf the entire Earth.
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More episodes
Marine Boy
S3, EP2 "The Ghosts of Spook Island"A supposedly haunted island is under the domination of the mysterious Captain Wraith.
Marine Boy
S3, EP3 "Ghost of Destruction"Marine Boy faces the greatest challenge of his career in the Ocean Patrol when a ship, the ghost of a heavy cruiser, haunts the seas; wherever it appears, a disaster follows.
Marine Boy
S3, EP4 "The Whale Blows Rainbows"Guppy, an enormous pet whale, is kidnapped by Cuthbert Tuthsum, a butler with ambitions toward evil.
Marine Boy
S3, EP5 "The Great Plankton Menace"Dr. Bulthrod's plane, carrying precious specimens of a rare plankton, is shot down; the plankton escapes into the sea, where it grows and threatens to engulf the entire Earth.
Marine Boy
S3, EP1 "The Tremendous Tremendo"When the evil Despotic invents a super electronic brain called Tremendo, he plans world conquest; when he intervenes, Marine Boy is knocked unconscious and kidnapped.
