Biological oceanography is a field of marine science that studies the biological and ecological processes occurring in and around the world's oceans. It focuses on the interrelationships between marine organisms and their environment, including nutrient cycling, energy flow, and population dynamics. Biological oceanographers use a variety of techniques to investigate these relationships, including remote sensing, acoustics, and molecular biology. They play a critical role in helping scientists understand and manage the complex marine ecosystems that are essential to our planet's health and well-being.