Edited by Mike Jackson, some rights reserved (CC BY-SA)
Photo Credits
- 1. (c) Juan Cruzado, some rights reserved (CC BY-SA), uploaded by Juan Cruzado
- 2. (c) WoRMS for SMEBD, some rights reserved (CC BY-NC-SA)
- 3. (c) Ecomare/Salko de Wolf, some rights reserved (CC BY-SA)
- 4. (c) pfaucher, some rights reserved (CC BY-NC), uploaded by pfaucher
- 5. (c) Brian Gratwicke, some rights reserved (CC BY)
- 6. (c) Natural England, some rights reserved (CC BY-NC-ND)
- 7. (c) gailhampshire, some rights reserved (CC BY)
- 8. (c) Anita, some rights reserved (CC BY-NC)
- 9. (c) BJ Stacey, some rights reserved (CC BY-NC)
- 10. (c) Sara Simma, some rights reserved (CC BY-NC), uploaded by Sara Simma
- 11. (c) chris buelow, some rights reserved (CC BY-NC)
- 12. (c) Donna Pomeroy, some rights reserved (CC BY-NC), uploaded by Donna Pomeroy
- 13. (c) Michael Webber, some rights reserved (CC BY-NC-SA)
- 14. (c) Christopher Michel, some rights reserved (CC BY)
- 15. (c) Kingfisher, some rights reserved (CC BY-SA)
- 16. (c) Nick Tepper, some rights reserved (CC BY-NC), uploaded by Nick Tepper
- 17. (c) jasondain, some rights reserved (CC BY-NC), uploaded by jasondain
- 18. (c) Robin Gwen Agarwal, some rights reserved (CC BY-NC), uploaded by Robin Gwen Agarwal
- 19. (c) noahgaines, some rights reserved (CC BY-NC), uploaded by noahgaines
- 20. (c) Charles Young, some rights reserved (CC BY-NC-ND)
- 21. (c) Owen Strickland, some rights reserved (CC BY-NC), uploaded by Owen Strickland
- 22. (c) Bering Land Bridge National Preserve, some rights reserved (CC BY)
- 23. (c) Yersinia pestis, some rights reserved (CC BY-NC-SA)
- 24. (c) Paul Cools, some rights reserved (CC BY-NC), uploaded by Paul Cools
- 25. (c) Jukka Jantunen, some rights reserved (CC BY-NC), uploaded by Jukka Jantunen
- 26. (c) Matt, some rights reserved (CC BY-NC-SA)
- 27. (c) Don McCullough, some rights reserved (CC BY-NC)
- 28. (c) pike JO, some rights reserved (CC BY)
- 29. (c) GRID Arendal, some rights reserved (CC BY-NC-SA)
- 30. (c) NTNU, Faculty of Natural Sciences, some rights reserved (CC BY)
- 31. (c) Tanner Senti, some rights reserved (CC BY-NC), uploaded by Tanner Senti
- 32. (c) wally_smith, some rights reserved (CC BY-NC), uploaded by wally_smith
- 33. (c) crgillette, some rights reserved (CC BY-NC), uploaded by crgillette
- 34. (c) Örvar Atli Þorgeirsson, some rights reserved (CC BY-NC-ND)
- 35. (c) Bering Land Bridge National Preserve, some rights reserved (CC BY-SA)
- 36. (c) Gabriel Barathieu, some rights reserved (CC BY-SA)
- 37. (c) joecf, some rights reserved (CC BY-NC-ND), uploaded by joecf
- 38. (c) Jason Burrows, some rights reserved (CC BY-NC-ND)
- 39. (c) Dan Weaver, some rights reserved (CC BY-NC)
- 40. (c) Allan Hopkins, some rights reserved (CC BY-NC-ND)
- 41. (c) monique_chapman, some rights reserved (CC BY-NC), uploaded by monique_chapman
- 42. (c) Anthony B. Zerafa, some rights reserved (CC BY-NC), uploaded by Anthony B. Zerafa
- 43. (c) François Xavier TESTU, some rights reserved (CC BY-NC-SA)
- 44. (c) Mark Dennis, some rights reserved (CC BY-NC), uploaded by Mark Dennis
- 45. (c) Len2040, some rights reserved (CC BY-ND)
- 46. (c) Florida Fish and Wildlife Conservation Commission, some rights reserved (CC BY-NC-ND)
- 47. (c) Martha de Jong-Lantink, some rights reserved (CC BY-NC-ND)