Here is a concise summary of the provided text:
**Title:** 10 Scary Things Found Underwater
**Summary:**
A YouTube video presents 10 eerie discoveries made underwater, including:
1. **Mysterious Metal Object**: Unidentified metal structure with unknown origins
2. **Titanic Wreckage**: Personal belongings, including 100 paired leather shoes, from the 1912 tragedy
3. **Ancient Roman Ship**: 2,000-year-old vessel with a primitive computer-like device (Antikythera Mechanism)
4. **Sunken City of Thonis-Heraklion**: Ancient Egyptian city discovered in 1998 with artifacts and statues
5. **Underwater Graveyard**: Fossilized remains of a prehistoric species, resembling dinosaurs, in a sea cave
6. **Lake Michigan Monolith**: 10,000-year-old structure with an animal sculpture, similar to Stonehenge
7. **The Road to Nowhere (Bahamas)**: A 3,000-year-old, half-mile-long road made of limestone, with unknown purpose
8. **Unidentified Underwater Object (UFO?)**: A 140,000-year-old, 60-foot-long structure that interfered with divers' equipment
9. **Giant Underwater Statues (Grenada)**: 18 sculptures of people holding hands, created to appear eerie
10. **13,000-Year-Old Wooden Statue (Russia)**: A well-preserved, 17-foot-tall statue with potential secret messages or warnings.
Here are the key facts extracted from the text, numbered and in short sentences, without opinions:
**1.** A YouTube notification for a video with 19 lakh subscribers only reaches 1,000 people.
**2.** Water is essential for survival on Earth.
**3.** Humans have been exploring and discovering new things underwater for centuries.
**4.** A mysterious metal object was found underwater, with unclear origins.
**5.** The Titanic ship sank in the North Atlantic Ocean after colliding with an iceberg.
**6.** Over 1,500 people lost their lives in the Titanic accident (more than 100 years ago).
**7.** A search in 1980 (and subsequent searches) attempted to locate and potentially recover the Titanic.
**8.** 100 joined leather shoes were found underwater, evidence of the lives lost in the Titanic accident.
**9.** A 2,000-year-old Roman ship was discovered in 1901 in the Greek Island of NCR region.
**10.** The Antikythera Mechanism, a ancient device (circa 2,000 years old), was found in the Roman ship, considered the world's first computer.
**11.** The Antikythera Mechanism helped ancient people track solar and planetary movements and predict weather events.
**12.** The city of Thonis-Heraklion (Rai Sangini City) was discovered underwater in 1998, with ruins dating back thousands of years.
**13.** A graveyard with huge Lemnos (an ancient species) was found in sea caves.
**14.** The Lemnos species was discovered to be very old, resembling dinosaurs in shape.
**15.** A 10,000-year-old monolith was discovered in Lake Michigan, similar to Stonehenge.
**16.** The monolith features a sculpture of an animal, similar to an elephant.
**17.** A stone road, approximately 3,000 years old, was discovered underwater near the mini island of Bahamas.
**18.** The stone road is made of limestone and features two large stones along its path.
**19.** A UFO-shaped object (60ft long, 10ft high) was found 285ft underwater, with an estimated age of 140,000 years.
**20.** A 11,600-year-old wooden statue (originally 17ft tall) was discovered 130ft underwater in the Ural Mountains of Russia.
**21.** The wooden statue was found broken, in an oxygen-free environment, yet remarkably well-preserved.