Liquid nitrogen is incredibly cold, boiling at minus 196°C, and it’s often used in science labs, cooking, and special effects for its dramatic fog. If you were to pour it into the sea, the nitrogen would instantly vaporize, creating a massive cloud of fog and bubbles as it rapidly expands. It’s harmless in small quantities, but the extreme cold can freeze anything it touches and displace oxygen in enclosed areas, making it dangerous in large amounts. Scientists use it to study extreme temperatur