- Wikipedia (pic and Information)
- About.com
- nmfs.noaa.gov
- Practicalfishkeeping.co.uk
- Marinebio.org
- flmnh.ufl.edu
- Animal.Discovery.com
- sites.google.com (pic and Information)
- wiki.answers.com
- fishindex.blogspot.com
- Enchantedlearning.com (pic)
- stuffintheair.com (pic)
- bigmarinefish.com (pic)
- thefeaturedcreature (pic)
- bwfa-usa.org (pic)
- animalstown (pic)
- Ellis, Richard. Swordfish: A Biography of the Ocean Gladiator. University of Chicago Press, 2013.
