Freshwater Plants

These are all true plants. In freshwater, much of the algal growth is in the form of slimes that grow on rocks, plants, and other surfaces, and of course microscopic phytoplankton. While freshwater algae is an important part of the ecosystem, it is not very remarkable to the typical scuba diver.


Microscopic Filamentous Green Algae
Microscopic Filamentous Green Algae ( plankton and attached )

Cattail

Typha latifolia

Size: to 7 ft

Habitat: water's edge

Notes:



Duckweed

Spirodela polyrhiza

Size: to 0.1"

Habitat: floating free at surface

Notes: Among the smallest seed plants; important food for many waterfowl.


Yellow Water Lily

Nuphar advena

Size: to 9" (leaves)

Habitat: rooted in muddy bottoms with leaves floating at the surface

Yellow is the most common color, but you may also find white and pink.


Hornwort

Ceratophyllum demersum

Size: to 10 ft

Habitat: beneath the surface in quiet waters

Notes: May form dense thickets


from AWOIS:

H10224/86 -- OPR-C121-WH-86; WRECKAGE WITH 52 FT PNEUMATIC DEPTH GAUGE LEAST DEPTH, WHICH IS BELIEVED TO BE THIS ITEM, APPROXIMATELY 100M SW OF AWOIS POSITION; DIVERS FOUND THE WRECK OF A BARGE, APPROXIMATELY 20 X 45 M; THREE BOILERS AND NUMEROUS OTHER TYPES OF SHIPYARD DEBRIS WERE FOUND STREWN OVER AN AREA OF 360 X 165 FT; IN THE NW CORNER OF THE SITE THE REMAINS OF ANOTHER WRECK WAS FOUND WITH ONLY THE SHELL PLATING AND FLOOR FRAMING REMAINING; APPROXIMATELY 200 FT LONG, 27 FT BEAM AND SHELL PLATING EXTENDING 5 FT ABOVE THE BOTTOM; BOTH ENDS OF THE WRECK TAPERED INTO THE SAND WITH NO BOW OR STERN VISIBLE; ONE OBJECT CONSISTING OF GUARD RAIL TYPE METAL, APPROXIMATELY 2 FT WIDE, 3/8 INCH THICK, AND 40 FT LONG, FORMING A 60 DEGREE ARCH WITH THE MIDDLE STANDING 10 FT OFF THE BOTTOM; SITE CONSISTED OF TWO WRECKS AND SHIPYARD DEBRIS, INCLUDING A BOOM CRANE; LEAST DEPTH TAKEN ON THE TOP OF THE BOILER LOCATED AT THE NORTHEAST SECTION OF SITE. (UPDATED MSD 4/91)

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