The National Science Foundation (NSF) is offering a grant opportunity titled "Biological Oceanography," aimed at supporting fundamental research in biological oceanography and marine ecology across various aquatic environments, including estuarine, coastal, and deep-sea systems, as well as the Great Lakes. Proposals must focus on significant topics in population, community, or ecosystem ecology or oceanography, contributing to the understanding of marine or Great Lakes ecosystems, and interdisciplinary research is encouraged. There are no cost-sharing requirements, and proposals can be submitted at any time, with additional information available through the NSF's program description and support contact at grantsgovsupport@nsf.gov.