Reported by: Timmy "The Brave" Jenkins
Location: The Dark Depths of the Ocean Floor
Details: This behemoth of a monster was seen devouring a school of fish whole. Witnesses claim it was 100 feet long and had eyes that glowed with an otherworldly light.
View The Kraken's Revenge in more detail
Reported by: Professor Tentacles
Location: Tokyo Bay
Details: A massive squid, rumored to be over 500 feet long, was spotted in Tokyo Bay, causing widespread panic and a sushi shortage.
Read about the aftermath of The Great Tentacled Menace
Reported by: Captain Jack "The Sailor" Stevens
Location: The Mermaid Lagoon
Details: Several mermaids went missing in a single night, leaving behind only a trail of shimmering scales and a haunting melody that still echoes through the lagoon.
Dive into the mystery of the vanishing sirens
Reported by: Dr. Reginald "The Cthulhu Expert" Pembroke
Location: The Depths of Madness
Details: An ancient sea monster, worshipped by cultists worldwide, was spotted rising from the depths, its many tentacles writhing like a thousand snakes.
Witness the terror of the Old One
Reported by: Octavia "The Octo" Jackson
Location: The Great Barrier Reef
Details: A massive octopus, seemingly possessed by an otherworldly force, rose up against its human overlords, taking control of the reef and declaring its own tentacled rule.
Read about the cephalopod revolution
Reported by: Finley "The Shark Whisperer" McSharkface
Location: The Gulf of Mexico
Details: A massive tornado, comprised entirely of sharks, tore through the gulf, leaving a trail of destruction and a faint scent of fishy fear.
Witness the horror of the toothy twister
Reported by: Captain James "The Siren's Song" Harris
Location: The Mediterranean Sea
Details: A beautiful siren lured sailors to their doom with her enchanting voice, only to reveal her true form: a creature with a voice like honey and eyes like lanterns.
Be seduced by the sirens' sweet melody
Reported by: The Kraken's Revenge Task Force
Location: The same place as before
Details: The same Kraken that terrorized the world in 2015 returned, hungrier than ever, and with a grudge against humanity.
Read about the sequel to the classic tale of terror
Reported by: Professor Tentacula "The Squid Expert" McTentacle
Location: The Mariana Trench
Details: A behemoth squid, with the power to control the very fabric of reality, was spotted in the depths of the Mariana Trench, causing widespread terror and a few minor changes to the laws of physics.
Witness the terror of the giant cephalopod
Reported by: Dr. Jelly "The Jelly Expert" McJelly
Location: The world's oceans
Details: A giant jellyfish, seemingly possessed by an alien force, was spotted stinging its way across the globe, leaving a trail of dead sea creatures and confused beach-goers.
Read about the gelatinous horror that shook the world
Top Ten Honorable Mentions for more sea monster sightings that didn't quite make the cut.
Browse our archive of sea monster sightings, from the absurd to the terrifying.