Photos:
- 1. (c) Donna Fernstrom, some rights reserved (CC BY), uploaded by Donna Fernstrom
- 2. (c) Rob Van Epps, some rights reserved (CC BY-NC), uploaded by Rob Van Epps
- 3. (c) copepodo, some rights reserved (CC BY-NC-ND)
- 4. (c) Stylurus, some rights reserved (CC BY-NC-ND)
- 5. (c) Jerry Oldenettel, some rights reserved (CC BY-NC-SA)
- 6. (c) David Bygott, some rights reserved (CC BY-NC)
- 7. (c) Diana-Terry Hibbitts, some rights reserved (CC BY-NC), uploaded by Diana-Terry Hibbitts
- 8. (c) Mike Keeling, some rights reserved (CC BY-ND)
- 9. (c) James Maughn, some rights reserved (CC BY-NC), uploaded by James Maughn
- 10. (c) Jeff Skrentny, some rights reserved (CC BY-NC), uploaded by Jeff Skrentny
- 11. (c) Chris Harrison, some rights reserved (CC BY-NC), uploaded by Chris Harrison
- 12. (c) Amber Hart, some rights reserved (CC BY-NC), uploaded by Amber Hart
- 13. (c) J. N. Stuart, some rights reserved (CC BY-NC-ND)
- 14. (c) tom spinker, some rights reserved (CC BY-NC-ND)
- 15. (c) Michael Price, some rights reserved (CC BY-NC-ND), uploaded by Michael Price
- 16. (c) Karim Rezk, some rights reserved (CC BY-NC-ND)
- 17. (c) Eric Osmundson, some rights reserved (CC BY-NC-SA)
- 18. (c) Marijan Tunjic, some rights reserved (CC BY)
- 19. (c) Laurent Lebois ©, some rights reserved (CC BY)
- 20. (c) Alan Vernon, some rights reserved (CC BY-NC-SA)
- 21. (c) Jim, the Photographer, some rights reserved (CC BY)
- 22. (c) Mike Baird, some rights reserved (CC BY)
- 23. (c) TheIguana, some rights reserved (CC BY-SA)
- 24. (c) Jeffrey Beall, some rights reserved (CC BY-SA)
- 25. (c) Terry Ross, some rights reserved (CC BY-SA)
- 26. (c) Arthur Chapman, some rights reserved (CC BY-NC-SA)
- 27. (c) Minette, some rights reserved (CC BY-NC)
- 28. (c) Sam Kieschnick, some rights reserved (CC BY), uploaded by Sam Kieschnick
- 29. (c) Juan Cruzado Cortés, some rights reserved (CC BY-SA), uploaded by Juan Cruzado Cortés
- 30. (c) Susan Bury, some rights reserved (CC BY-NC), uploaded by Susan Bury
- 31. (c) Danny Barron, some rights reserved (CC BY-NC-ND)
- 32. (c) Ouwesok, some rights reserved (CC BY-NC)
- 33. (c) Vitaliy Khustochka, some rights reserved (CC BY-NC)
- 34. (c) Steven Mlodinow, some rights reserved (CC BY-NC), uploaded by Steven Mlodinow
- 35. (c) Heather Rutherford, some rights reserved (CC BY-NC), uploaded by Heather Rutherford
- 36. (c) dylanmeiteen, some rights reserved (CC BY-NC), uploaded by dylanmeiteen
- 37. (c) Elizabeth Esperanza Aragón Piña, some rights reserved (CC BY-NC), uploaded by Elizabeth Esperanza Aragón Piña
- 38. (c) Logan Ediger, some rights reserved (CC BY), uploaded by Logan Ediger
- 39. (c) Ezra Schwartzberg, some rights reserved (CC BY-NC-ND), uploaded by Ezra Schwartzberg
- 40. (c) thaths, some rights reserved (CC BY-NC)
- 41. (c) J. Martin, some rights reserved (CC BY-NC)
- 42. (c) adamdv18, some rights reserved (CC BY-NC)
- 43. (c) Anita Gould, some rights reserved (CC BY-NC), uploaded by Anita Gould
- 44. (c) Juan Cruzado, some rights reserved (CC BY-SA), uploaded by Juan Cruzado
- 45. (c) SMBishop, some rights reserved (CC BY-SA)
- 46. (c) Josh More, some rights reserved (CC BY-NC-ND)
- 47. (c) Bill Bouton, some rights reserved (CC BY-SA)
- 48. (c) Erin and Lance Willett, some rights reserved (CC BY-NC-ND)
- 49. (c) Yathin, some rights reserved (CC BY-NC-ND)
- 50. (c) BJ Stacey, some rights reserved (CC BY-NC)
- 51. (c) Helen A. Czech, some rights reserved (CC BY-NC), uploaded by Helen A. Czech
- 52. (c) Jeremy Yoder, some rights reserved (CC BY-NC)
- 53. (c) Stephen Ramirez, some rights reserved (CC BY-NC-ND), uploaded by Stephen Ramirez
- 54. (c) Andy Newman, some rights reserved (CC BY-NC), uploaded by Andy Newman
- 55. (c) Noel Burkhead, some rights reserved (CC BY-NC-SA)
- 56. Duane Raver. Original uploader was Ourboldhero at en.wikipedia, no known copyright restrictions (public domain)
- 57. (c) Aaron Lincoln, some rights reserved (CC BY-NC), uploaded by Aaron Lincoln
- 58. (c) Wisconsin Department of Natural Resources, some rights reserved (CC BY-ND)
- 59. (c) Peter, some rights reserved (CC BY-NC-ND)
- 60. (c) Ohio Sea Grant, some rights reserved (CC BY-NC)
- 61. (c) robeposse, some rights reserved (CC BY)
- 62. (c) Brian Yap (葉), some rights reserved (CC BY-NC)
- 63. (c) scott e, some rights reserved (CC BY-NC-SA)
- 64. anonymous, no known copyright restrictions (public domain)
- 65. (c) triciap, some rights reserved (CC BY-NC), uploaded by triciap
- 66. (c) Cliff, some rights reserved (CC BY)
- 67. (c) Allison Helen Carpenter, some rights reserved (CC BY-NC), uploaded by Allison Helen Carpenter
- 68. Ellen Edmonson and Hugh Chrisp, no known copyright restrictions (public domain)
- 69. Original uploader was Fluri at en.wikipedia, no known copyright restrictions (public domain)
- 70. (c) Anders Holder, some rights reserved (CC BY-NC), uploaded by Anders Holder
- 71. (c) Marine discovery, some rights reserved (CC BY-SA)
- 72. (c) Brian Gratwicke, some rights reserved (CC BY)
- 73. (c) USFWS Fisheries, some rights reserved (CC BY-NC-ND)
- 74. (c) Jacob Stagg, some rights reserved (CC BY-NC), uploaded by Jacob Stagg
- 75. (c) Lauren Parker, some rights reserved (CC BY-NC), uploaded by Lauren Parker
- 76. (c) adamduvall20, some rights reserved (CC BY-NC)
- 77. (c) Ferran Pestaña, some rights reserved (CC BY-NC)
- 78. (c) Robby Deans, some rights reserved (CC BY-NC), uploaded by Robby Deans
- 79. (c) Melody Lytle, some rights reserved (CC BY-NC), uploaded by Melody Lytle
- 80. (c) Kristi DuBois, some rights reserved (CC BY-NC), uploaded by Kristi DuBois
- 81. (c) Judy Gallagher, some rights reserved (CC BY)
- 82. (c) Sean McCann, some rights reserved (CC BY-NC-SA)
- 83. (c) Don Henise, some rights reserved (CC BY)
- 84. (c) Heather Pickard, some rights reserved (CC BY-NC), uploaded by Heather Pickard
- 85. (c) randyshonkwiler, some rights reserved (CC BY-NC)
- 86. (c) Peter Prehn, some rights reserved (CC BY-NC-ND)
- 87. (c) Greg Pauly, some rights reserved (CC BY-NC), uploaded by Greg Pauly
- 88. (c) Ken Slade, some rights reserved (CC BY-NC)
- 89. (c) Franco Folini, some rights reserved (CC BY)
- 90. (c) brian lee clements, some rights reserved (CC BY-NC)
- 91. (c) Jason Forbes, some rights reserved (CC BY-NC-ND)
- 92. (c) Bill Carrell, some rights reserved (CC BY-NC-ND), uploaded by Bill Carrell
- 93. Mike Elson, no known copyright restrictions (public domain)
- 94. (c) David Kaposi, some rights reserved (CC BY-NC), uploaded by David Kaposi
- 95. (c) summerazure, some rights reserved (CC BY-NC-SA)
- 96. (c) Kerry Matz, some rights reserved (CC BY-NC-SA)
- 97. (c) Bill Bouton, some rights reserved (CC BY-NC)
- 98. (c) MolanicPix, some rights reserved (CC BY-NC), uploaded by MolanicPix
- 99. (c) Robb Hannawacker, some rights reserved (CC BY-NC-SA)
- 100. (c) Aditi, some rights reserved (CC BY-NC-SA)
- 101. (c) Ken-ichi Ueda, some rights reserved (CC BY), uploaded by Ken-ichi Ueda
- 102. (c) 104860852614073572279, some rights reserved (CC BY-NC-SA), uploaded by 104860852614073572279
- 103. (c) Benny Mazur, some rights reserved (CC BY)
- 104. (c) Bill Bouton, some rights reserved (CC BY-NC-SA)
- 105. (c) Shanthanu Bhardwaj, some rights reserved (CC BY-SA)
- 106. (c) Greg Lasley, some rights reserved (CC BY-NC), uploaded by Greg Lasley
- 107. (c) David Hofmann, some rights reserved (CC BY-NC-ND)
- 108. (c) dloarie, some rights reserved (CC BY), uploaded by dloarie
- 109. (c) Anne Toal, some rights reserved (CC BY)
- 110. (c) ___daniel___, some rights reserved (CC BY-NC)
- 111. (c) Aleta Rodriguez, some rights reserved (CC BY-NC-ND)
- 112. (c) Larry Meade, some rights reserved (CC BY-NC-SA)
- 113. (c) Kent McFarland, some rights reserved (CC BY-NC)
- 114. (c) Kaitlin Backlund, some rights reserved (CC BY-NC-ND), uploaded by Kaitlin Backlund
- 115. (c) Zac Cota, some rights reserved (CC BY-NC), uploaded by Zac Cota
- 116. (c) Bill Bumgarner, some rights reserved (CC BY-NC-ND)
- 117. (c) Nick Block, some rights reserved (CC BY), uploaded by Nick Block
- 118. (c) Daniel George, some rights reserved (CC BY-NC), uploaded by Daniel George
- 119. (c) Catherine Cook, some rights reserved (CC BY-NC-ND)
- 120. (c) TexasEagle, some rights reserved (CC BY-NC)
- 121. (c) ktratboy, some rights reserved (CC BY-ND)
- 122. (c) Jeffrey Pippen, some rights reserved (CC BY-NC-SA)
- 123. (c) pondhawk, some rights reserved (CC BY)
- 124. (c) Brad Smith, some rights reserved (CC BY-NC)
- 125. (c) Anne Reeves, some rights reserved (CC BY-ND)
- 126. no rights reserved, uploaded by USGS Native Bee Inventory and Monitoring Laboratory
- 127. (c) Judith Ellen Lopez, some rights reserved (CC BY-NC)
- 128. (c) Katja Schulz, some rights reserved (CC BY)
- 129. (c) Mauricio Mercadante, some rights reserved (CC BY-NC-SA)
- 130. (c) Dan Mullen, some rights reserved (CC BY-NC-ND)
- 131. (c) Louis Shackleton, some rights reserved (CC BY-NC-SA)
- 132. (c) aarongunnar, some rights reserved (CC BY), uploaded by aarongunnar
- 133. (c) Jacob Bell, some rights reserved (CC BY-NC), uploaded by Jacob Bell
- 134. (c) Eran Finkle, some rights reserved (CC BY)
- 135. (c) Andrew McKinlay, some rights reserved (CC BY-NC), uploaded by Andrew McKinlay
- 136. (c) Larry Clarfeld, some rights reserved (CC BY-NC), uploaded by Larry Clarfeld
- 137. (c) James Shelton, some rights reserved (CC BY-NC-SA), uploaded by James Shelton
- 138. (c) Ben Sale, some rights reserved (CC BY)
- 139. (c) Don Loarie, some rights reserved (CC BY)
- 140. (c) Jim Johnson, some rights reserved (CC BY-NC-ND), uploaded by Jim Johnson
- 141. (c) bradensing, some rights reserved (CC BY-NC), uploaded by bradensing
- 142. (c) Thomas Shahan, some rights reserved (CC BY-NC), uploaded by Thomas Shahan
- 143. (c) ellen hildebrandt, some rights reserved (CC BY-NC), uploaded by ellen hildebrandt
- 144. (c) D. L. Quinn, some rights reserved (CC BY-NC), uploaded by D. L. Quinn
- 145. (c) Robert Webster, some rights reserved (CC BY-SA), uploaded by Robert Webster
- 146. (c) Bill Keim, some rights reserved (CC BY)
- 147. (c) Texas Photographer, some rights reserved (CC BY-NC), uploaded by Texas Photographer
- 148. (c) Judy Gallagher, some rights reserved (CC BY), uploaded by Judy Gallagher
- 149. (c) Oregon Department of Agriculture, some rights reserved (CC BY-NC-ND)
- 150. (c) IronChris, some rights reserved (CC BY-SA)
- 151. (c) Chris Evers, some rights reserved (CC BY-NC), uploaded by Chris Evers
- 152. (c) cassi saari, some rights reserved (CC BY-NC), uploaded by cassi saari
- 153. (c) Ted MacRae, some rights reserved (CC BY-NC-ND)
- 154. (c) Radd Icenoggle, some rights reserved (CC BY-NC), uploaded by Radd Icenoggle
- 155. (c) Joshua Doby, some rights reserved (CC BY-NC), uploaded by Joshua Doby
- 156. (c) Thaddeus Charles Jones, some rights reserved (CC BY-NC), uploaded by Thaddeus Charles Jones
- 157. (c) molanic, some rights reserved (CC BY-NC), uploaded by molanic
- 158. (c) Pam Piombino, some rights reserved (CC BY-NC), uploaded by Pam Piombino
- 159. (c) Jason M Crockwell, some rights reserved (CC BY-NC-ND), uploaded by Jason M Crockwell
- 160. (c) Brent Franklin, some rights reserved (CC BY-NC), uploaded by Brent Franklin
- 161. (c) saipelcsa, some rights reserved (CC BY-NC), uploaded by saipelcsa
- 162. (c) John B., some rights reserved (CC BY)
- 163. (c) Victor W Fazio III, some rights reserved (CC BY-NC), uploaded by Victor W Fazio III
- 164. (c) Steve Wells, some rights reserved (CC BY-NC), uploaded by Steve Wells
- 165. (c) softie, some rights reserved (CC BY-SA)
- 166. (c) Anthony Zukoff, some rights reserved (CC BY-NC-SA)
- 167. (c) JanetandPhil, some rights reserved (CC BY-NC-ND)
- 168. (c) Denis Doucet, some rights reserved (CC BY-NC), uploaded by Denis Doucet
- 169. (c) Fyn Kynd, some rights reserved (CC BY-SA), uploaded by Fyn Kynd
- 170. (c) JanePannor, some rights reserved (CC BY-NC), uploaded by JanePannor
- 171. no rights reserved, uploaded by Jesse Rorabaugh
- 172. (c) Dan L. Johnson, some rights reserved (CC BY-NC), uploaded by Dan L. Johnson
- 173. (c) Lauren Magner, some rights reserved (CC BY-NC), uploaded by Lauren Magner
- 174. (c) Eugene Zelenko, some rights reserved (CC BY-SA)
- 175. (c) Vicki DeLoach, some rights reserved (CC BY-NC-ND)
- 176. (c) Steve Berardi, some rights reserved (CC BY-SA)
- 177. (c) Andrew Reding, some rights reserved (CC BY-NC-ND)
- 178. (c) Jimmy Smith, some rights reserved (CC BY-NC-ND)
- 179. (c) Guy Lemelin, some rights reserved (CC BY-NC), uploaded by Guy Lemelin
- 180. (c) Robert, some rights reserved (CC BY-NC)
- 181. (c) Cameron Eckert, some rights reserved (CC BY-NC), uploaded by Cameron Eckert
- 182. (c) Charlotte Bill, some rights reserved (CC BY-NC), uploaded by Charlotte Bill
- 183. (c) Nikolai Vladimirov, some rights reserved (CC BY-NC), uploaded by Nikolai Vladimirov
- 184. (c) Brandon Hein, some rights reserved (CC BY-NC), uploaded by Brandon Hein
- 185. (c) Alexis, some rights reserved (CC BY), uploaded by Alexis
- 186. (c) C Hayes, some rights reserved (CC BY-NC)
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