35 Responses

  1. Dennis
    Dennis at |

    What about Godzilla?…No wait..he wasn’t prehistoric..He was caused by radiation…never mind.

    Reply
    1. Brandon Noble
      Brandon Noble at |

      Megalodon should be number one!

      Reply
      1. Brandon Noble
        Brandon Noble at |

        10.Sea Scorpion 9. Helicoprion 8.Kronosaurus 7. Basilosaurus 6.Elasmosaurus (Pleasiosaurus) 5. Dunkleosteus 4.Mosasaurus 3.Hainosaurus 2. Tylosaurus 1. Megalodon <What the list should be!

        Reply
        1. zai
          zai at |

          What about the PLESIOTH

    2. dave petro
      dave petro at |

      these marine dinosaurs were pretty cool to look at

      Reply
  2. Mike D.
    Mike D. at |

    what about Sigmund da Seamonster?

    Reply
  3. Dennis
    Dennis at |

    Hey, you left out Nemo.

    Reply
    1. chase
      chase at |

      no nemo is not a apex predotor he is a prey fish 🙂

      Reply
  4. The Riddler
    The Riddler at |

    Nice list, although I expected the number 1 monster to be a bit more…monstrous.

    Reply
    1. TopTenz Master
      TopTenz Master at |

      Let’s just say this list was ranked in no particular order. 😉

      Reply
    2. Tom
      Tom at |

      I guess #1 got there because it can still kill you. 😀

      I think it is a good list as it stands. I would have expected Meg at #1, but I did not realize most of these beasts existed until today. And giant stingrays? Yeah, never getting near a body of water larger than my bathtub ever again.

      Reply
  5. Brian Myers
    Brian Myers at |

    #2 … “They lived in the same oceans and ate the same food as the Megalodon, so this whale actually had to compete with the largest predatory shark ever.”

    WHY has this not been made into a drive-in movie yet?!?!?!?!?

    Reply
    1. Dennis
      Dennis at |

      Because there are no drive-in movies now.

      Reply
      1. Brian Myers
        Brian Myers at |

        Actually, there a handful of drive-ins left http://www.driveinmovie.com/mainmenu.htm I have 2 within 40 miles of where I live. I forgot how cool they used to be when we were kids 😀

        Reply
  6. Ian
    Ian at |

    Hey giant squids are still alive too, and they’re pretty monstrous…

    Reply
  7. write
    write at |

    Wow, Jaekelopterus rhenaniae are the sea scorpion…

    Reply
  8. dallas daniel hessler junior
    dallas daniel hessler junior at |

    they did not mention the kraken

    Reply
    1. Grumpy
      Grumpy at |

      You forgot Cecil, the seasick seaserpent!

      Reply
  9. Dennis
    Dennis at |

    What about the Rosie O’Donnellsaurus? That’s as terrifying as it gets.

    Reply
  10. Colin Burns
    Colin Burns at |

    Six giant fearsome predators of the ancient seas are not shown here. I doubt you have done much research on everything and anything ever written about them. Here is a list of Apex predators:
    PURRUSAURUS , which is a type of Cretaceaus Caiman up to 13 metres long.
    SARCOSUCHUS, a Cretaceaus Crocodile up to 15 metres (50 ft) long.
    The DEINOSUCHUS is another Cretaceaus Crocodile up to 15 metres (50 ft) long. The above three are considered with the top seven greatest bite force of all time.
    The ICHTYOSAUR is a giant predatory sea reptile in which the largest of the specjes is at 75 feet long that looked like a cross between a dolphin and a fish with a shark-like tail.
    The DUNKLEOSTIUS, at around 33 ft long is considered in the top three apex sea predator of all time and top two bite force along with the PREDATOR X, an apex at 49 ft and considered to be the one with the greatest bite force (x4 that of T-Rex) of any other creatures past or present.

    Reply
    1. Colin Burns
      Colin Burns at |

      Correction. Deino is an Alligator. Top three greatest bite force at number one is the MEGALODON, then a toss up between DUNKY and PRED X for 2nd and 3rd.

      Based on updated findings.

      Reply
  11. August
    August at |

    Just so no one is confused liopluridon was not 20 feet long but actually 20-30 METERS long with the largest being close to 50 meters making it one of, if not the largest predatory animal ever to live on the planet.

    Reply
  12. Hina
    Hina at |

    Thanks for the great list! Very interesting!!

    Reply
  13. Alas
    Alas at |

    I’d except Godzilla as NUMBER 1

    Reply
  14. Hezekiah
    Hezekiah at |

    Levyatan.. that sea monsters was mention in the bible… find it in The book of JOB

    Reply
  15. Alas
    Alas at |

    Well Godzilla is not real,so it is not number 1. The true number 1 is the 300 ton balenosaurus whale.

    Reply
  16. zai
    zai at |

    How big was MICRORAPTOR?

    And how long was is it?

    What year was they live?

    pls. reply me

    Reply
    1. Colin
      Colin at |

      Microraptor was not a sea creature but a small feathered Dromaeosaurid dinosaur and is a link between birds and dinosaurs. Their size ranges between 42 to 83 cm (1.4 to 2.7 ft). From the early Cretaceous period between 110 – 120 million years ago. Its torso is less than one hand wide.

      Reply
  17. Rob
    Rob at |

    “nor the ability to echolocate”

    I read that as nor the ability to eat chocolate

    Reply
  18. Da guy
    Da guy at |

    Maui is not a Maori god. He’s a Hawaiian demigod

    Reply
  19. ATTILA THE HUN
    ATTILA THE HUN at |

    Maui is a Maori god and Hawaiian demigod that came to New Zealand ! Duh?.

    Reply
  20. Thunder griffin
    Thunder griffin at |

    Megalodon is no. 10? Below a STINGRAY?!?!
    I feel disappointment towards my favorite of all sharks.

    Reply
  21. sharza
    sharza at |

    you know mosasaurs is the biggest sea creature i read in my book of dinosaurs

    Reply
  22. Marc Kevin F. Barredo
    Marc Kevin F. Barredo at |

    I thought Giant Stingray is called MANTA RAY? please enlighten me. thanks!

    Reply
  23. Elbert
    Elbert at |

    There are some still lurking in the murky waters these days like the Nessie and the Ogopogo. Love these sea monsters

    Reply

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