Latest episode
S3 E6 · Viking Returns
Sea Monsters is a documentary TV series that premiered on October 18, 2018. It has 3 seasons and 27 episodes so far and is still airing new episodes. The latest episode, Season 3 Episode 6 "Viking Returns", aired on August 5, 2026.
From deep-sea danger to mega holiday cruises, helping rivers flow and harvesting power, this program goes deep, unlocking the ultimate challenges of our water planet.
Last updated
27 episodes · 3 seasons
2018 · 8 episodes · Last episode: 8 years ago
The deceptively simple 20-foot shipping container has become the most revolutionary invention of the modern world, moving all of the worlds goods from ship to shore to truck to store.
Battling the worlds highest tides, a global team of scientists and engineers take to the water to install an underwater turbine that can turn the power of the ocean into clean electrical energy.
In the harbor at Charleston, South Carolina, mega marine machines are hauling, hoisting, dredging and digging to make way for towering container ships.
The United States Corps of Engineers employs a flotilla of mega marine machines to protect the Mississippi River.
Today's Navy fleets are the biggest and best equipped ever with destroyers, carriers, jets, helicopters and submarines that must be ready for anything from terrorism to natural disasters.
In Baltimore, engineers design and assemble a state-of-the-art, mega-bucket wheel dredge; they now must disassemble it and move it to Saudi Arabia where it will operate in one of the toughest dredge conditions in the world.
At the worlds largest cruise ports, professional teams race against the clock and the weather to re-supply the biggest cruise ships in the world.
The ports of Los Angeles and Long Beach take the keys to two new state-of-the-art fireboats ready to battle any blaze and extinguish any threat.
2020 · 13 episodes · Last episode: 6 years ago
Back to basics science and technology stories told through the voices and experiences of fantastic frontline characters about making the mega marine machines that take on the challenges of the world’s waters and win… most of the time. The Earth’s ocean really is the planet. It’s awesome. It holds the mysteries of the past, the key to all we have today, and the lifeline to our future. This fast-paced ocean adventure documentary series reveals how creative characters are using extraordinary tools to discover, explore, and work in our most extreme ocean environments.
Sea Monsters Season 2 release dates →The world’s fastest ferry, Francisco, is nicknamed the “Concorde of the Sea”, rocketing across South America’s treacherous Rio De La Plata twice a day on modified Boeing 747 jet engines.
The brightest minds in the world of marine propulsion are in a race against time to transform the most powerful engines ever imagined into the hybrid and all electric engines of the future.
An elite team of Dutch shipbuilders transform a surplus oil industry vessel into a luxury explorer superyacht for a wealthy and secretive client.
In Key West, Florida, a pair of rookie racers have brought their high-tech, million-dollar offshore catamaran to compete at the biggest gathering of offshore powerboats in the world.
In one of the busiest, coldest, stormiest ports on the eastern seaboard, getting monster ships safely docked is a titanic challenge.
Two brand-new, super-sized Coast Guard Cutters are primed to patrol America’s fiftieth state, on a mission to fight crime and protect this Pacific paradise.
A team of explorers from marine research company, OceanX is using the latest science and filmmaking tech to shine a spotlight on our deep sea’s darkest secrets; they are diving deeper than ever before on their state-of-the-art submarine.
A fleet of tidal and wave power machines are facing the ultimate test on the shores of Scotland’s Orkney Islands and they might just save the world.
Modern naval warfare has moved from the open ocean to the shallows and the US Navy’s Riverines squad has a new fleet of agile, heavily-armed jet boats that can go where the big battleships can’t go.
The world’s largest hospital ship, USNS Comfort, is a 70,000-ton humanitarian hulk that brings hope and healing to nations in need.
As overcrowding threatens our planet, a brand-new breed of explorer is combining modern engineering with way outside-the-box thinking to create a real-life Waterworld.
Dutch water warriors fight to defend their homeland from sinking beneath the sea by building a network of dykes, dams and superpumps.
The International Ice Patrol’s C-130 Hercules helicopter is the backbone of a cold water arsenal against “Iceberg Alley”, the same deadly waterway that shredded the Titanic.
2026 · 6 episodes · Last episode: 3 months ago
Driven by one man’s vision, Sigurd Aase sets out to rebuild the largest Viking ship ever attempted and sail it across the Atlantic using ancient design alone. Battling storms, fatigue and unforgiving seas, the crew must prove that the vessel can survive open-ocean conditions and reach North America without engines or modern technology.
In places where building on land is impossible, engineers build on water. Floating bridges connect communities where traditional structures cannot, but keeping them safe is a challenge. As traffic, weather and shifting water push these bridges to their limits, crews must act fast to prevent small problems from becoming major failures.
At Sanmar Shipyards in Altinova, Turkiye, engineers are redefining the tugboat for a new era of global trade. As container ships grow ever larger, the team tests whether electric power can match diesel strength when guiding massive vessels through tight, busy harbors.
At the Soo Locks, the most critical link in America’s industrial chain, winter closes fast. Crews battle ice, time and brutal conditions to guide the final iron ore freighters through the system, while tugs, divers and air-bubbler systems work nonstop to keep the channel open. The last ship must pass before shutdown.
Across southern France, two radically different wind-powered machines chase the same obsession: speed. SailGP F50 catamarans duel at close quarters in Saint-Tropez, while the SP80 speed craft trains in Leucate to break records. Both push foils, data and human control to the edge of physics.
At a Lake Erie recycling yard, a fire-damaged Great Lakes freighter arrives for its final job. A family-run crew races to make the ship safe, strip it for steel, and turn risk into profit, as shifting scrap prices, tight margins, and environmental dangers threaten every decision.
A date for the next episode of Sea Monsters hasn't been announced yet. Follow Sea Monsters in the Streambay app and you'll be notified as soon as a new episode airs.
The most recent episode of Sea Monsters, Season 3 Episode 6 "Viking Returns", aired on August 5, 2026.
Sea Monsters has 3 seasons with 27 episodes in total.
Sea Monsters first aired on October 18, 2018.
Download the Streambay app, follow Sea Monsters, and you'll get a push notification the moment each new episode is released.
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S1 · E552 3 months ago
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S18 · E260 4 years ago
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