Oceanography is a branch of science that studies the ocean and its phenomena. It covers various aspects such as marine life, geology, chemistry, physics, meteorology, and navigation. Oceanographers use different methods to collect data about the ocean including observations made while diving or sailing, satellite imagery, remote sensing techniques, and laboratory analysis of water samples. The goal is to understand how the ocean works as a system, its interactions with the atmosphere, and how human activities impact it. Oceanography helps us better manage our oceans' resources, predict natural disasters such as tsunamis or hurricanes, and develop strategies for conservation efforts.