World Register of Marine Species (Global, marine): http://www.marinespecies.org/
AlgaeBase (Global, aquatic): https://www.algaebase.org/
Harmful Micro-Algae List (Global, aquatic): http://www.marinespecies.org/hab/
Marine Invasive Species of the US (US marine): https://invasions.si.edu/nemesis/
Freshwater Invasive Species of the US (US freshwater): https://www.glerl.noaa.gov/glansis/
Yale Map of Life (Global terrestrial): https://bgc.yale.edu/map-of-life
US MarineCadastre (port, shipping, fisheries, aquaculture, energy, etc.): https://marinecadastre.gov/data/
GTAP Bilateral Trade data: https://www.gtap.agecon.purdue.edu/databases/default.asp
World Ocean Atlas 2018: https://www.nodc.noaa.gov/OC5/woa18/
WorldClim downscaled current and future atmospheric climate data: https://www.worldclim.org/
Landsat data: https://landsat.gsfc.nasa.gov/data/
NCBI Resources (GenBank, BLAST, SRA, etc.): https://www.ncbi.nlm.nih.gov/
UseGalaxy (cloud bioinformatics!): https://usegalaxy.org/
DNA Subway (more cloud bioinformatics!): https://dnasubway.cyverse.org/
Happy Belly Bioinformatics Tutorials: https://astrobiomike.github.io/about/
R blogs (blogs for beginners, mapping, machine learning, bioinformatics, etc.): https://www.r-bloggers.com/
R for Community Ecology: https://www.davidzeleny.net/anadat-r/doku.php/en:start
Python: https://www.python.org/about/gettingstarted/
QGIS: https://www.qgis.org/en/site/forusers/trainingmaterial/index.html
Command Line basics: https://www.davidbaumgold.com/tutorials/command-line/ and https://tutorial.djangogirls.org/en/intro_to_command_line/
ECOLOG (run by the Ecological Society of America, must register): https://www.esa.org/membership/ecolog/
Texas A&M Wildlife & Fisheries Job Board: https://wfscjobs.tamu.edu/job-board/
International Association of Great Lakes Research Job Board: http://iaglr.org/jobs/
iBiology Courses: https://www.ibiology.org/online-biology-courses/