This document discusses various types of plankton and their roles in marine ecosystems. It describes phytoplankton like diatoms and dinoflagellates, which are primary producers, as well as zooplankton like copepods that feed on phytoplankton. It also discusses how some marine species like sea turtles, shrimp, and crabs spend part of their life as plankton. Overfishing and bycatch are negatively impacting fish stocks and endangered species like sea turtles, sharks, and tuna.

1. Life in the Sea Chapter 16 & 17

3. Source: http://en.wikipedia.org/wiki/Kingdom_(biology)

4. Phytoplankton Characteristics

7. Diatoms

11. Biolumenesence

17. Plankton Bloom at Galapagos Islands, Equador Source: http://www.nasa.gov/vision/earth/environment/ocean_plants_21.html

19. http://www.cccturtle.org/media.php?page=video

21. Source: http://www.art.com/products/p10125931-sa-i1011149/sea-turtles-of-the-world.htm

23. Kemps Ridley

24. Hawksbill Source: http://www.biologicaldiversity.org/index.html

25. Most populations are affected by habitat destruction and illegal trade. Photo of turtles caught on longlines and trawling.

27. Dead Turtle caught in trawl net

28. TED or Turtle Excluder Devise being used

32. By Catch

37. Source: http://www.fragileseas.com/2009_07_01_archive.html

39. Black Grouper. Photo credit: George Ryschkewitsch (Location: South Atlantic) Source: http://www.endoverfishing.org

41. Shark Products