The seabed (also known as the seafloor, sea floor, or ocean floor) is the bottom of the ocean.

Most of the oceans have a common structure, created by common physical phenomena, mainly from tectonic movement, and sediment from various sources. The structure of the oceans, starting with the continents, begins usually with a continental shelf, continues to the continental slope – which is a steep descent into the ocean, until reaching the abyssal plain – a topographic plain, the beginning of the seabed, and its main area. The border between the continental slope and the abyssal plain usually has a more gradual descent, and is called the continental rise, which is caused by sediment cascading down the continental slope.

The mid-ocean ridge, as its name implies, is a mountainous rise through the middle of all the oceans, between the continents. Typically a rift runs along the edge of this ridge. Along tectonic plate edges there are typically oceanic trenches – deep valleys, created by the mantle circulation movement from the mid-ocean mountain ridge to the oceanic trench.

Alexandra Marguerite Clémentine Cousteau (born March 21, 1976) is the daughter of Philippe Cousteau and the granddaughter of world famous French explorer and filmmaker Jacques-Yves Cousteau. A dedicated environmentalist, Cousteau advocates the importance of conservation, restoration and sustainable management of water resources for a healthy planet and productive societies.

A member of the third generation of the Cousteau family to devote their lives to exploring and explaining the natural world, Cousteau first went on expedition with her father, Philippe Cousteau, when she was four months old, and learned to scuba dive with her grandfather, Jacques-Yves Cousteau, when she was seven. She grew up traveling the globe, developed a passion for adventure and learned firsthand the value of conserving the natural world. Of her father and grandfather, Cousteau says, "The best example they gave me was the importance of living a life of consequence, value, and meaning. I honor their memories by creating a legacy of my own in speaking out for the preservation of our blue planet and all its waters."

James Francis Cameron (born August 16, 1954) is a Canadian film director, film producer, deep-sea explorer, screenwriter, visual artist and editor. His writing and directing work includes Piranha II: The Spawning (1981), The Terminator (1984), Aliens (1986), The Abyss (1989), Terminator 2: Judgment Day (1991), True Lies (1994), Titanic (1997), Dark Angel (2000–02), and Avatar (2009). In the time between making Titanic and Avatar, Cameron spent several years creating many documentary films (specifically underwater documentaries) and co-developed the digital 3D Fusion Camera System. Described by a biographer as part-scientist and part-artist, Cameron has also contributed to underwater filming and remote vehicle technologies. On March 26, 2012, Cameron reached the bottom of the Mariana Trench, the deepest part of the ocean, in the Deepsea Challenger submersible.

He has been nominated for six Academy Awards overall and won three for Titanic. In total, Cameron's directorial efforts have grossed approximately US$2 billion in North America and US$6 billion worldwide. Without adjusting for inflation, Cameron's Titanic and Avatar are the two highest-grossing films of all time at $2.16 billion and $2.78 billion respectively. In March 2011 he was named Hollywood's top earner by Vanity Fair, with estimated 2010 earnings of $257 million.

William Sanford "Bill" Nye (born November 27, 1955), popularly known as Bill Nye the Science Guy, is an American science educator, comedian, television host, actor, mechanical engineer, and scientist. He is best known as the host of the Disney/PBS children's science show Bill Nye the Science Guy (1993–1998) and for his many subsequent appearances in popular media as a science educator.

William Sanford Nye was born in Washington, D.C., the son of Jacqueline (née Jenkins; c. 1920–2000), a codebreaker during World War II, and Edwin Darby "Ned" Nye (died 1997), also a World War II veteran whose experience in a Japanese prisoner of war camp led him to become a sundial enthusiast. Nye is a fourth-generation Washington, D.C. resident on his father's side of the family. After attending Lafayette Elementary and Alice Deal Junior High in the city, he was accepted to the private Sidwell Friends School on a partial scholarship, graduating in 1973. He studied mechanical engineering at Cornell University, where one of his professors was Carl Sagan, and graduated with a Bachelor of Science in 1977. He was awarded an honorary doctorate by The Johns Hopkins University in May 2008. In May 2011, Nye was awarded an Honorary Doctor of Science degree from Willamette University where he was the keynote speaker for that year's commencement exercises.