Estuaries are the bodies of water where freshwater rivers and streams merge with oceans. Flora in estuaries includes seaweed, algae, and marsh grasses; fauna include waterfowl, worms, and crabs.

Baker's cord grass
Baker's cord grass, Center for Aquatic and Invasive Plants, University of Florida, Visit the web site for a video and images; click for a larger version in pop-up window.
http://plants.ifas.ufl.edu/plant-directory/spartin...
Common Reed
Common Reed, Aqua Plant, Department of Wildlife and Fisheries Science, Texas A&M University, Photo and description.
http://aquaplant.tamu.edu/plant-identification/alp...
Estuaries - Plants of the Estuary - Te Ara Encyclopedia of New Zealand
Estuaries - Plants of the Estuary, Te Ara Encyclopedia of New Zealand, Plant descriptions.
http://www.teara.govt.nz/EarthSeaAndSky/MarineEnvi...
Everglades National Park - Plants
Everglades National Park - Plants, Description and small photographs of a few ENP plants.
http://www.nps.gov/ever/naturescience/plants.htm
Kelp Forest Cam
Kelp Forest Cam, Monterey Bay Aquarium, Watch the live cam 7 a.m.–7 p.m. Pacific Time. You can also watch diver's feeding the specie at certain times.
http://www.montereybayaquarium.org/animals-and-exp...
Kelp Forests
Kelp Forests, Biological Science, BIO/GEO 353, SUNY Stone Brook, Photographs with descriptions.
http://life.bio.sunysb.edu/marinebio/kelpforest.ht...
Let's Learn About Estuary Plants - 026 Video
Let's Learn About Estuary Plants - 026 EstuaryLiveTV, YouTube.com, Video length: 05:44.
http://www.youtube.com/watch...
Seagrasses
Seagrasses, By Jennifer Kennedy,, ThoughtCo., Combination of text and photos.
https://www.thoughtco.com/seagrass-beds-and-meadow...
Spartina
Spartina, Wikipedia.com, Article with image; click for larger version.
http://en.wikipedia.org/wiki/Cord_grass
What are Reeds?
What are Reeds?, Written by S.E. Smith, Wisegeek.com, All-text article.
http://www.wisegeek.com/what-are-reeds.htm