The Best Sextant Alternatives in 2026

WoRMS catalogs marine species names and reflects current published taxonomic knowledge.

Browse and download research outputs produced by CGIAR and its partners in CGSpace.

BioChem provides biological and chemical marine data through its database.

Search Australian marine and climate science data through the Australian Ocean Data Network portal.

Copernicus Marine provides free and open marine data and services for marine policy, blue growth, and scientific innovation.

Statistics Canada's data catalog offers searchable tables, microdata, and visualizations across topics including health, labor, and trade.

NOAA's CLASS is a digital library of real-time and historical satellite data from its polar-orbiting environmental satellites.

GFBio supports research data management for biodiversity, ecology, and environmental studies, with services to plan, submit, and visualize data.

NCEAS advances ecological and environmental science through research and open data science.

The UK's Environmental Change Network monitors air, soil, water, animals, and plants and provides data from its research program.

NOAA’s National Centers for Environmental Information provide historical weather, climate, ocean, and magnetic field data.

The Sierra Leone Data Portal provides a catalog of datasets organized by topics such as agriculture, health, energy, and trade.

The European Environment Agency gathers environmental data with its member-country network and produces assessments on a range of topics.

Systema Dipterorum catalogs names of living and extinct two-winged insects and provides access to its taxonomic resources.

BacDive catalogs strain-linked information about bacterial and archaeal biodiversity, with search, API, download, and special collection options.

EarthEnv develops standardized global environmental layers for studying biodiversity, ecosystems, and climate.

Bhoonidhi provides access to an archive of remote-sensing data from Indian satellites.

The Atlantic Canada Conservation Data Centre provides biodiversity information for the region.

Kingston Data brings together local information and lets visitors view borough profiles by ward or postcode.

Merton Data brings together local information about the borough and lets visitors explore details and compare local areas.

Search the CEDA Archive for atmospheric and Earth observation data, which includes more than 20 petabytes of research.

The space weather center provides data display and downloads for geomagnetic, ionospheric, solar, and related observations.

The U.S. Integrated Ocean Observing System coordinates people and technology to gather ocean, coastal, and Great Lakes data.

The Canadian Biodiversity Information Facility provides biodiversity information and data through Agriculture Canada.