The Aqualung, invented by Jacques Cousteau and Emile Gagnan in 1943, was the first self-contained underwater breathing apparatus that allowed divers to breathe compressed air underwater.

Jacques Cousteau, a French naval officer, explorer, and filmmaker, is widely regarded as the father of modern scuba diving. He co-invented the Aqualung and made numerous contributions to underwater exploration and conservation.

Conshelf I, designed by Jacques Cousteau and his team, was the first underwater habitat. It was a cylindrical structure that allowed divers to live and work underwater for extended periods.

The first underwater archaeological excavation was conducted in the 1960s by George Bass, an American marine archaeologist. He excavated a Bronze Age shipwreck off the coast of Turkey.

Biscayne National Park, established in 1980, was the first underwater national park. It protects a diverse array of marine ecosystems, including coral reefs, seagrass beds, and mangrove forests.

Jacques Piccard and Don Walsh were the first people to reach the deepest point in the ocean, the Mariana Trench, in 1960. They descended to a depth of 10,911 meters (35,800 feet) in the bathyscaphe Trieste.

The first commercially successful diving mask was the face mask, which allowed divers to see clearly underwater. It was invented in the early 1900s.

The Nikonos was the first underwater camera, introduced by Nikon in 1963. It was a revolutionary camera that allowed photographers to capture stunning images underwater.

Hans Hass, an Austrian marine biologist and filmmaker, is considered the father of underwater photography. He was one of the first people to use underwater cameras to document marine life.

The Bathyscaphe Trieste was the first underwater television system. It was used by Jacques Piccard and Don Walsh to reach the deepest point in the ocean, the Mariana Trench, in 1960.

The first scuba diving certification agency, the National Association of Underwater Instructors (NAUI), was established in the 1950s. It was followed by other agencies such as the Professional Association of Diving Instructors (PADI) and the Scuba Schools International (SSI).

The Deco Brain, introduced in 1983, was the first dive computer. It was a revolutionary device that allowed divers to monitor their depth, time, and decompression status underwater.

Jacques Cousteau, a French naval officer, explorer, and filmmaker, is considered the father of underwater exploration. He made numerous contributions to underwater exploration and conservation, including the invention of the Aqualung and the development of underwater habitats and submersibles.

The first underwater archaeological excavation conducted using scuba diving was conducted in the 1960s by George Bass, an American marine archaeologist. He excavated a Bronze Age shipwreck off the coast of Turkey.

The first underwater national park, Biscayne National Park, was established in 1980. It protects a diverse array of marine ecosystems, including coral reefs, seagrass beds, and mangrove forests.