Welcome to the "Ancient Coastal Seas". Prepare to step through the time portal, back to hundreds of millions of years ago. Dunkleosteus - "The Armored Tank".
Devonian Period (360 million years ago). Size: 6-9 meters long. Weight: Up to 4 tons.
They possess no teeth, but two self-sharpening bony plates acting like a guillotine. Bite force of 5,000 Newtons, enough to crush prehistoric sharks. Megalodon - The largest shark in history.
Lived during the Miocene and Pliocene. Size: 15-18 meters long. Weight: 60 - 100 tons.
Its teeth are the size of a human hand, wide enough to swallow a car whole. Cameroceras - Giant Cone Squid. Size: 6-9m long, weight: 10 tons.
Apex predator of the Ordovician, using tentacles to drag prey into a steel-hard beak. Xiphactinus - The ferocious "Bulldog Fish". 4-6 meters long.
Weight: 5 tons. Extremely voracious. Fossils show they often died swallowing prey too large.
A giant bony fish with terrifying, jagged teeth. Jaekelopterus - Giant Sea Scorpion. 2.
5 meters long. Weight: 2 tons. Largest arthropod ever.
Its claws were the terror of the era. They are known as the first "Armored Giants" of the Earth. Titanoboa - Giant Paleocene Snake.
13 meters long. Weight: Over 5 tons. It could constrict and swallow prehistoric crocodiles whole.
Its existence proves the Earth was much hotter back then. Leaving the shallows, we enter the "Deep Ancient Ocean Zone". Where light fades and creature sizes increase drastically.
Shastasaurus - Giant Fish Lizard. Up to 21m long. Weight: 20 - 68 tons.
Largest marine reptile in history. Gentle suction feeders, eating squid. Despite looking like dolphins, they are actually Triassic reptiles.
Livyatan - Ancient Killer Whale. Length: ~17. 5m.
Weight: 50 - 57 tons. Possessed huge teeth on both jaws, unlike modern sperm whales. Named after the Leviathan.
The only rival to the Megalodon. Ichthyosaurus - Fish Lizard. 2-4 meters long.
Weight: ~1 ton. Resembles dolphins due to convergent evolution. Huge eyes for hunting in the dark.
They gave birth in the water instead of laying eggs on land. Plesiosaurus - Long-necked Lizard. 3-5 meters long.
Weight: ~1 ton. Long neck, small head, four paddle fins. Prototype for the Loch Ness Monster.
Though looking slow, they were incredibly agile swimmers. Mosasaurus - River Lizard. Up to 17m long.
Weight: ~15 tons. Known as the "T-Rex of the Deep". Lived in the late Cretaceous.
Has an extra row of teeth in its palate to prevent prey from escaping. Megalodon returns - King of the Seas. Weight: 50 - 70 tons.
A massive block of pure muscle. The scars are proof of its battles. At this range, you can feel the pressure of the ultimate predator.
Welcome to "Abyssal Depths". Where pressure crushes submarines, home to alien-like monsters. Helicoprion - Spiral Saw Shark.
8 meters long. Weight: ~6 tons. Famous for its coiled lower jaw, lined with teeth like a deadly chainsaw.
Scientists spent a century debating the true placement of this "saw". Rhizodus - Freshwater Monster. 6-7 meters long.
Weight: 3 tons. Giant lobe-finned fish of the Carboniferous. 22cm long fangs.
They could lunge out of the water to catch prehistoric amphibians. Giant Abyssal Octopus (Kraken based). Arm span over 20 meters.
Capable of spraying thick black ink. A symbol of ship-sinking fear. Giant squids are real, but this size is a pure nightmare.
Abyssal Anglerfish - Omega Class. (Exaggerated Version). The lure light attracts prey in the eternal darkness of the abyss.
Representing the ultimate fear of what hides in the Mariana Trench. Stomiidae Titan - Giant Viperfish. (Fictional Titan Class).
Teeth too long to close its mouth. Glowing red bioluminescence. Gigantic version of deep-sea predators.
The embodiment of underwater nightmares. Titan Gulper Eel. (Exaggerated Version).
Mouth opens like a giant umbrella. Extreme expandable stomach. Allows it to swallow prey larger than itself.
Final Sector: "Ancient Abyss Phenomena". Where the line between science and myth blurs. Leedsichthys - Giant Filter Feeder.
16. 5m long. Weight: 50 tons.
Largest bony fish in history. Gentle giant, eating only plankton. Like modern blue whales, they glide gracefully through the ocean.
Archelon - The Turtle King. Size of a car. 4.
6 meters long, 4 meters wide. Leathery shell, not solid bone. Possesses a beak strong enough to crush hard-shelled squid easily.
Titanic Ammonite. Shell diameter up to 3 meters. Nature's masterpiece with a spiral shell.
Extinct at the same time as dinosaurs. The Bloop - The Sound Monster. (Cryptid).
Based on the ultra-low frequency sound recorded by NOAA in 1997. Legend says it is the snore of a sleeping giant monster. Unknown Organism - Eye of the Deep.
Unidentified entity. A giant golden eye opens, larger than a skyscraper. We have only explored 5% of the ocean.
What is watching us from the dark?
