The Firefly (1978)

While diving in a remote French lake, a couple of YouTubers who specialise in underwater exploration videos discover a house submerged in the deep waters. What was initially a unique finding soon turns into a nightmare when they discover that the house was the scene of atrocious crimes. Trapped, with their oxygen reserves falling dangerously, they realise the worst is yet to come: they are not alone in the house.

Dr. Emma Collins and her team are spending their third summer on the island of Little Happy studying the effect of climate change on the great white sharks who come to the nearby nursery every year to give birth. Along with the last two inhabitants of this former fishing village, their peaceful life is disrupted when a "scientific" team led by her ex-boyfriend and marine biologist Richard show up looking for three bull sharks who we soon learn aren't just any bull sharks.

Sammy and Ray, leatherback turtles and friends forever, are enjoying an atoll's water and sand, shepherding new hatchlings Ricky and Ella out to sea. Suddenly, a poacher swoops in and ships them off to be part of a spectacular aquarium show for tourists in Dubai. The kingpin of the place, Big D the seahorse, enlists them in his plans for a great escape. But with their new friends Jimbo the bug-eyed blob fish and Lulu the snippy lobster, Annabel the sweet Octopus, and a whole family of penguins, Sammy and Ray hatch breakout plans of their own. That is when little Ricky and Ella arrive, determined to break in to rescue them. After a series of thrilling adventures and narrow escapes, our heroes head south to meet up with Shelly, Sammy's first and only love.

After another deadly shark attack, Ellen Brody decides she has had enough of New England's Amity Island and moves to the Caribbean to join her son, Michael, and his family. But a great white shark has followed her there, hungry for more lives.

Set during a sultry summer in a French suburb, Marie is desperate to join the local pool's synchronized swimming team, but is her interest solely for the sake of sport or for a chance to get close to Floriane, the bad girl of the team? Sciamma, and the two leads, capture the uncertainty of teenage sexuality with a sympathetic eye in this delicate drama of the angst of coming-of-age.

The world's most highly qualified crew of archaeologists and explorers is led by historian Milo Thatch as they board the incredible 1,000-foot submarine Ulysses and head deep into the mysteries of the sea. The underwater expedition takes an unexpected turn when the team's mission must switch from exploring Atlantis to protecting it.

Treasure hunter Ben "Finn" Finnegan has sunk his marriage to Tess and his trusty boat in his obsessive quest to find the legendary Queen's Dowry. When he finds a vital clue that may finally pinpoint the treasure's whereabouts, he drags Tess and her boss, billionaire Nigel Honeycutt, along on the hunt. But Finn is not the only one interested in the gold; his former mentor-turned-enemy Moe Fitch, hired by rapper-turned-gangster Bigg Bunny, will stop at nothing to beat him to it.

A civilian oil rig crew is recruited to conduct a search and rescue effort when a nuclear submarine mysteriously sinks. One diver soon finds himself on a spectacular odyssey 25,000 feet below the ocean's surface where he confronts a mysterious force that has the power to change the world or destroy it.

A ship sent to investigate a wave of mysterious sinkings encounters the advanced submarine, the Nautilus, commanded by Captain Nemo.

Nemo, an adventurous young clownfish, is unexpectedly taken from his Great Barrier Reef home to a dentist's office aquarium. It's up to his worrisome father Marlin and a friendly but forgetful fish Dory to bring Nemo home -- meeting vegetarian sharks, surfer dude turtles, hypnotic jellyfish, hungry seagulls, and more along the way.

Three children accidentally get turned into fish after drinking a potion made by an eccentric scientist. The kids end up in the sea, with one problem. They must find and drink the antidote within 48 hours, or forever remain as fish.

A sea turtle who was hatched in 1959 spends the next 50 years traveling the world while it is being changed by global warming. Born on a Baja, California beach in 1959, new hatchling Sammy must do what his fellow newborn sea turtles are doing: race across the beach to the ocean before they are captured by a seagull or crab. Thus begins Sammy's incredible fifty-year ocean journey. Along the way he meets his best friend, a fellow turtle named Ray, and overcomes obstacles both natural and man-made while trying to fulfill his dream of travelling around the world. Throughout his voyage, Sammy never forgets about Shelly - the turtle he saved on his first day and loves passionately from afar.

Pup, a bamboo shark, discovers egg sacs while playing around the ocean with his friends. When he sees human poachers stealing the eggs from his reef, Pup makes it his mission to save his family. As he leaves the sea and enters the beautiful, yet dangerous, world of humans he'll prove he isn't too small to save his family.

Dory is reunited with her friends Nemo and Marlin in the search for answers about her past. What can she remember? Who are her parents? And where did she learn to speak Whale?

Although theorised, no one is really ready when a mountain pass above the scenic and narrow Geiranger fjord in Norway collapses and creates a tsunami over 300 feet high. A geologist is one of those caught in the middle of it.

An adventure-loving couple convince their friends to explore a remote, uncharted cave system in the forests of Northern Australia. With a tropical storm approaching, they abseil into the mouth of the cave, but when the caves start to flood, tensions rise as oxygen levels fall and the friends find themselves trapped. Unknown to them, the storm has also brought in a pack of dangerous and hungry crocodiles.

After an earthquake destroys their underwater station, six researchers must navigate two miles along the dangerous, unknown depths of the ocean floor to make it to safety in a race against time.

Four teenage girls go on a diving adventure to explore a submerged Mayan city. Once inside, their rush of excitement turns into a jolt of terror as they discover the sunken ruins are a hunting ground for deadly great white sharks. With their air supply steadily dwindling, the friends must navigate the underwater labyrinth of claustrophobic caves and eerie tunnels in search of a way out of their watery hell.

Adventure awaits 12 year old Brendan who must fight Vikings and a serpent god to find a crystal and complete the legendary Book of Kells. In order to finish Brother Aiden's book, Brendan must overcome his deepest fears on a secret quest that will take him beyond the abbey walls and into the enchanted forest where dangerous mythical creatures hide. Will Brendan succeed in his quest?

With a team of the world's foremost historic and marine experts as well as friend Bill Paxton, James Cameron embarks on an unscripted adventure back to the wreck of the Titanic where nearly 1,500 souls lost their lives almost a century ago.