Swim Underwater Without Disturbing the Surface 🏊🏻 #swimming #underwater #challenge

el tunnel | tunnel underwater

Is it safe to swim in this lake?#science #popular #usa #lake | Swimming

How China Built The World's Longest Undersea Tunnel. #Megaprojects #Engineering

The Tunnel Built Beneath an Entire Ocean

Norway Is Building the World's First Floating Underwater Tunnel 🌊😳

From every perspective, artistic swimming is pure art in motion 🎨 #ArtisticSwimming #Routine #Underwater #highlight

This Giant Seaweed Can Grow Taller Than A 10-Story Building! 🌊 Bull kelp is one of the fastest-growing seaweeds on Earth and can reach an incredible 100 feet (30 meters) in length! It begins life anchored to rocks by a tangled, root-like structure called a holdfast. Although it resembles roots—or even a brain—it doesn’t absorb nutrients like plant roots. Instead, its job is simply to keep the kelp firmly attached against powerful ocean waves. A gas-filled bulb, known as a pneumatocyst, acts lik

🐋 Orca's Gentle Encounter with a Sea Turtle | A Rare Ocean Moment #short #sea #orca