Marine and ocean engineers are engineers concerned with the exploration of the oceans, the transportation of products over water, and the utilization of resources in the world's oceans, seas, and lakes.

Agricultural engineering traces back thousands of years to the time when people began to examine ways to produce food and food products more efficiently. The ASAE, or American Society of Agricultural Engineers, is one of the most prominent professional societies for agricultural engineers.

Environmental engineering is a field which has evolved to improve and protect the environment while maintaining the rapid pace of industrial activity.