Awesome Datasets list of open-access biology datasets.

The Nucleotide database is a collection of sequences from several sources, including GenBank, RefSeq, TPA and PDB. Genome, gene and transcript sequence data provide the foundation for biomedical research and discovery.

RCSB PDB curates, annotates, and makes publicly available the PDB data about the 3D shapes of proteins, nucleic acids, and complex assemblies deposited by scientists around the globe.

This web site hosts time series data sets from hundreds of independent projects aiming to understand the patterns and dynamics of bird populations across the western hemisphere. In particular, eBird connects remote-sensed data of landscape variables and human population to species ocurrence. Each data set consists of observational data, the whole website is a compilation of different observational studies.

CERC makes scientific data available to the public through the USGS ScienceBase catalog.

The Ecological Data Wiki is a source for identifying datasets that are useful to the study of ecology. The site engages the ecological community to compile this information rather than relying on each scientist to contribute information for their own studies.

This is a publicly accessible registry describing scientific data sets on ecology and the environment. The data sets registered here are associated with articles published in the journals of the Ecological Society of America.

The KNB is a long term home for synthesis datasets and research products generated by National Center for Ecological Analysis and Synthesis (NCEAS) working group products as well as the broader ecology and environmental science community. The KNB accepts, and publishes, all environmental or ecological related data.

MorphoBank is a web application providing an online database and workspace for evolutionary research, specifically systematics (the science of determining the evolutionary relationships among species). Data includes species phenotypes to include anatomy, physiology, behavior and other features of species.

The National Science Foundation's National Ecological Observatory Network (NEON) is a continental-scale observation facility operated by Battelle and designed to collect long-term open access ecological data to better understand how U.S. ecosystems are changing.