Explore the mysteries of the ocean floor in this 35-minute video lecture. Dive into topics such as mapping techniques using sidescan and multibeam sonar, satellite altimetry, and the characteristics of passive and active continental margins. Discover the formation of turbidity currents and their impact on underwater landscapes. Examine the Madeira Abyssal Plain and the diverse features of the ocean basin floor. Learn about the extensive oceanic ridge system and its role in shaping the seafloor. Investigate various types of seafloor sediments, including biogenous and hydrogenous deposits. Gain insights from reputable sources like the National Geophysical Data Center, NASA's Ocean and Earth System, NOAA, and studies on hydrothermal vent communities to enhance your understanding of the vast underwater world.