Can you recommend an American sci-fi movie that I watched when I was young? The plot is about finding a black box at the bottom of the sea, but I forgot the name of the movie?

I watched it in elementary school. It was an American sci-fi film. Who can tell me what it is called? Thank you, I still don't know what it's called...
I only remember:
1. It seems that a submarine or plane has crashed and fallen into the sea. Then a team of people is sent to find the black box.
2. One of the scenes was an open space in the underwater mountain range. The team members even climbed up. It was the kind of space with air hidden in the underwater mountain range. There was air inside. This scene left a deep impression.
3. Many rescue team members died one after another. At the end of the movie, only two people (who seemed to be the male and female protagonists) were left. They escaped to the sea in two small escape capsules.
4. There seemed to be an unknown creature, alien, or something at the bottom of the sea in the plot. This was the cause of the original accident, and it also caused the team members who later searched for the black box to die one after another.
[Remember, the main plot of this story is to find the black box at the bottom of the sea!]
Who knows what this movie is called? I saw it in the mid-90s. According to the filming technique, it should be from the 80s and 90s.
Thank you, everyone!

Answer 1

" This Man Comes From the Deep Sea " is a sci-fi futuristic novel written by the author, Feng Qingyan. The general plot of this novel is:

His origins were mysterious, and his identity was a mystery!
The amnesiac brain was constantly awakening all kinds of black technology, and there were all kinds of secrets hidden in the body!
On this day, Harlow appeared on Earth's surface!
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Abyss Files was a suspense adventure survival novel written by the author, Childe 90. The general plot of the novel was:

An expedition team formed by the military and civilian explorers went to the Abyss of the World to explore the unsolved mysteries of the world, analyze the two-dimensional country, and encounter mazes, virus mutation, ancient country soldiers, geological mutations, and the Eight Palaces under the Sea…
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" Legend of the Murloc Pirates " was a light novel written by the author, Diesel-Powered Chicken. The general plot of the novel was:

Fifty thousand meters deep in the dark and oppressive Dead Sea, a pair of vertical pupils slowly opened again. He was once the most powerful Sea Arowana in history, and the world government was terrified of him. He used to be the vice-captain of the Locks Pirates, which the navy feared. He was once the most terrifying executioner in the eyes of pirates and evil forces.He had once single-handedly made the weak Fishmen Island a world power. In the long years, this sea without memories had long forgotten him. He was the former king of Fishmen Island, Moang Seale. When the soul from Earth awakened this powerful corpse. How would he write another legend on this sea?
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" The Mastermind of the Movie World " was a sci-fi time-travel novel written by the author's wretched cousin. The general plot of the novel was:

Orphan Le Yan transmigrated to the movie world. His father had a plane crash right after he transmigrated, leaving him a large amount of wealth. He thought that he would become a rich man and live a carefree life, but after checking the things his father left for him, he realized that his father, who had always been kind, did not seem to be a good person…Then, as a little sun, he was involved in all kinds of strange things with women, and his body became more and more strange. In the end, he inexplicably became the BOSS behind the scenes of the villain.
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" Returning to Earth to Play Black Technology at the Beginning " was a sci-fi novel written by the author, New Yorker, from Shen Zhen. The general plot of the novel was:

[The Great Tang Empire did not perish. It just went to outer space to develop!] [This book will witness Li Xin's descendants using all kinds of black technology to rise up in a small island that is about to disappear at sea level.] [I will show everyone this mysterious small island country. In this small island country that occupies the best position on the blue planet, the protagonist will use black technology to control the rise in atmospheric temperature, control seawater pollution, build floating cars, build maritime cities, and build spaceships. Slowly, step by step, he will leave the blue planet and influence the world, bringing the blue planet into the cosmic era.]
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The book " Divine Black Sea Lord " was written by the author Lan Bai Cheng Hei. It was a novel about the game and the game world. The general plot of the novel was:

Photon Colt, Quantum Arm, Scorching Sun Core, Wasteland, Famine, Ancient Martial Arts. This was a world where mecha and ancient martial arts coexisted, technology and fantasy coexisted, disaster and doomsday went hand in hand. This was also an era where the strong rose. In the vast Black Sea and the endless planes, there would always be a group of people who were fearless of the wind and waves, who robbed the ghost ship and kissed the mermaid. They were the darlings of the times, the lords of the Black Sea.
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" The Age of Great Voyage: I Have a Specter Ship " was a light novel written by the author, Second Dream. The general plot of this novel was:

Six hundred years ago, the famous explorer Garland discovered the legendary Golden Island in the Sea of Mysteries, causing a sensation in the world. Two hundred years ago, the great pirate Derek Cavendish discovered the moving Treasure Island somewhere in the Sea of Mysteries, and his name spread throughout the world. A hundred years ago, the Golden Sea Route was formed, and maritime trade became extremely developed. Countless people were attracted by the legend of the Sea of Mysteries. They boarded the huge Dragonbone Sailboat and followed the Golden Sea Route, passing through the dangerous Fog Sea and entering the mysterious Sea of Mysteries. Since then, the era of great voyages had completely begun…On the Sea of Fog, there was a mysterious ghost ship. The skeleton captain, Lin Qi, looked at the ticket in the hands of the passengers and swept his gaze across the ship opposite him. His empty eyes flickered with a dangerous light. " One ticket can carry ten people across the sea. This is the rule." "There are eleven people on your ship. Don't think that you can hide from my eyes. With one more person, it will be a little difficult." "Tell me, what kind of price do you want to pay, or do you want me to throw all of you into the sea?"
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" Sleepwalking Movie World " was a sci-fi time-travel novel written by the author, Z Mu Yifei Mu. The general plot of this novel was:

There were familiar movies, memorable scenes, and unforgettable characters. This was the world of movies.
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" Deep Sea Live Broadcast " was a fantasy novel written by the author, Big Bunny Yang. The general plot of this novel was:

The real world was in the sea!
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The book " Great Sea Realm " was a Xianxia-cultivation civilization novel written by the author, Ye Xingzang. The general plot of this novel was:

A nameless kid from God Forging Island, an ordinary young man who made a career out of forging, had accidentally entered Devil's Water, which was filled with raging waves and violent winds. Dark clouds shrouded the vast and desolate sea at all times, and ten terrifying black ghost ships appeared in the sea every twenty years, taking countless innocent lives each time. Born as a lone star, the road ahead is treacherous and treacherous. Destiny is ten deaths and no life. How should I survive?