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HBOI Group 4 project

Marine Education

Day 1 (3-5-02)

Water Depth: in centimeters Left Middle Right

20 meters 37.5 37.5 37.5

10 meters 35.5 33.8 34

0 meters 18 14 13.5

These results were taken at 11:20 am during a low tide.

Seagrass

The water was not clear enough to receive accurate results, however, in approximation:

Left, Middle, Right

20 m. - 91%, 94%, 95%

10 m - 60%, 95%, 75%

0 m - 100%, 100%, 100%

Results are of Gracilaria, a *seaweed*

In areas the drift algae was colorful in reds and browns, but on shore it was dried out.

Water Samples (extracted around 11:30 am)

20 m. Left, 20 m. Center, 20 m. Right

Dissolved Oxygen: 7.6, 7.0, 6.8

Salinity 27%, 27%, 27%

10 m. Left, 10 m. Center, 10 m. Right

DO: 7.5, 7.3, 7.5

Salinity 27%, 27%, 26%

1m. Left, 1m. Center, 1m. Right

DO: 7.4, 7.3, 7.6

Salinity 27%, 26%, 26%

Core Samples: from looking at through the core holder

!Left! ?Middle? - Right-

1 m. ! 75% lt. mud! ?50% lt. mud? - 85% lt. mud with streaky dark-

!25% grainy sand! ?50% dk mud (big grains)? - mud in bottom 50%-

- 15% grain.-

10 m !70% lt. mud! ?75% lt. mud? - 60% lt. mud -

!30% mud, but not! ?20% darker sand? - 40% grainy sand with grass-

!too grainy! ?5% sediments?

20 m !100% grainy sand! ?85% mix sand and mud? -100% grainular sand-

!shells in bottom 50%! ?10% sand? -bottom 50% had rocks-

!top 20% darker sand! ?5% sediment w/ grass?

*******Note - !...! = Left; ?...? = Center; -...- = Right

Day 2 (3-6-02) (Site 3)

Water Depth at 10:55 am

In centimeters

Left, Middle, Right

1 meter - 11.3, 13.9, 8.5

10 meters - 27.5, 30.1, 22.8

20 meters - 30.5, 30.5, 30.5

Water Quality (20 degrees c)

Dissolved Oxygen

Left, Center, Right

1 meter - 7.9, 9.4, 7.3

10 meters - 8.8, 7.3, 7.8

20 meters - 8.1, 8.1, 7.7

* The Salinity was 25% for all samples.

Sieving for Organisms:

Left:

1 meter: 25 hermit crabs and many dead shells

10 meters: 5 hermit crabs, 1 piece of coral, pieces of wood, shells

20 meters: 1 live Glass Shrimp, 1 worm, 1 egg sac, Shoal Seagrass

Center:

1 meter: 1 live hermit crab, shells, 6 dead organisms

10 meters: 6 hermit crabs and broken shells

20 meters: 11 hermit crabs, a bunch of small clam shells

Right:

1 meter: 16 hermit crabs, Shoals Seagrass, a little bit of shells, a piece of wood

10 meters: 13 hermit crabs, Manatee Seagrass, little bit of little shells

20 meters: 1 live Blue Crab, 1 closed clam, 1 dead shrimp, 12 hermit crabs, many shells

Day 3 (3-7-02)

Water Depth at 10:50 a.m.

In centimeters

Left, Center, Right

1 - 19.3, 12.5, 13.5

10 - 25.6, 26.4, 25.1

20 - 27.5, 27.5, 27.5

Water Samples taken around 11 am (21 degrees c)

20L, 20C, 20R, 10L, 10C, 10R, 1L, 1C, 1R

D O: 7.4, 7.6, 7.8 , 7.6, 7.6, 7.7, 7.3, 7.9, 7.8

Salinity %: 22, 22, 22, 21, 22, 22, 22, 22, 23

Sieving for Organisms:

Left:

1 m: 2 hermit crabs, 6 snails, shells

10 m: 3 hermit crabs, 3 snails, 1 clam closed, broken shells

20 m: 1 Seasquirt, 1 BrittleStar, 7 hermit crabs, 3 snails, broken snail shells

Center:

1 m: 1 Lugworm, 5 snails, 2 crabs, shells

10 m: 5 hermit crabs, 7 snails, shells, 1 berry

20 m: 7 snails, 1 rock, many shells, 7 hermit crabs

Right:

1 m: 3 hermit crabs, 2 snails, broken shells

10 m: 5 hermit crabs, 3 snails, 1 rock, many broken shells

20 m: 7 hermit crabs, 7 snails, 1 rock, many shells

Seining

Day1

Did not Sein

Day2

Left = 16 Pink Shrimp, 1 Sheepshead, 2 Gobi, 8 Pinfish, 3 Croaker, 3 Spider Crabs, 2 Mud Crabs, 9 Glass Shrimp, 6 Grunts, 3 Blue Crabs, 1 Gulf Pipefish, 1 Hermit Crab.

Center = 8 Pink Shrimp, 2 Blue Crabs, 1 Grunt, 1 Pinfish, 1 Croaker, 1 Spider Crab, 1 Glass Shrimp, 1 Southern Puffer, 1 Long clawed hermit cerab.

Right = 25 Pink Shrimp, 1 Mud Crab, 1 Grunt, 2 Pinfish, 2 Croaker, 1 Spider Crab, 12 Glass Shrimp, 1 Gobi, 3 Silver Perch, 1 Striped Mullet, 1 Blue Crab.

Day 3

Left = 11 Pink Shrimp, 1 Gulf Pipefish, 1 Scaled Sardine, 10 Pinfish, 6 Croaker, 1 Juvenile Redfish, 5 Mud Crabs, 1 Grunt, 4 Blue Crabs, 3 Sheepshead, 1 Mohara, 1 Southern Puffer, 7 Glass Shrimp, 6 long Clawed Hermit Crabs, 1 Snapping Shrimp, 1 Killfish.

Center = 10 Pink Shrimp, 1 Tunakit-Sea Squirt, 2 Scaled Sardines, 6 Pinfish, 3 Croaker, 2 Spider Crabs, 3 Mud Crabs.

Right = 7 Pink Shrimp, 1 Tunakit-Sea Squirt, 2 Sheepshead, 7 Pinfish, 2 Glass Shrimp, 2 Mud Crabs, 3 Long clawed Hermit Crabs.

Weather

Day 1

11:30 on shore: Gusts of 32 kph, Temp. of 19, wind - E-SE at 8 kph

11:30 20m: Gusts of 24 kph, Temp. of 19, wind - E at 8 kph

1:00 on shore: Gusts of 40 kph, Temp. of 18.5, wind - E-NE at 8-11 kph

1:00 20m: Gusts of 32 kph, Temp. of 18.5, wind - E-NE at 8-11 kph

Day 2

11:30 on shore: Gusts of 27 kph, Temp. of 21.8, wind -E at 11 kph

11:30 20m: Gusts of 27 kph, Temp. of 19, wind - E at 16-24 kph

Day 3

11:30 on shore: Slight Breeze, Temp. of 25, wind - E-SE

11:30 20m: Slight Breeze, Temp. of 20, wind - SE

Seiving of **Core Samples**

Center 1m

Level 1 - Wood chips, berries, snails, mini clam shells, hermit crabs, sticks, and branches

2 - Sand and Smaller particles of Level 1

3 - Thicker Sand

4 - Less mud

5 - Fine mud with some darker sand

Center 10m

1 - Big shells, rocks, seaweed, and snails

2 - Sand with small shells, pieces of grass, and broken debris

3 - Small, fine sand particles and wood chips

4 - Little mud

5 - Fine mud

Center 20m

1 - 3 long clawed hermit crabs, seaweed, shells, and sediment

2 - sand, shell pieces, and small pieces of sea grass

3 - finer sand, little sediment, and very small shell pieces

4 - Mixture of sand and mud

5 - little mud

Left 1m

1 - 5 hermit crabs, 1 snail, twigs, grasses, wood pieces, and bits of shells

2 - very small shells

3 - Sand

4 - mud

5 - fine mud

Left 10m

1 - shells, wood, and sea grass

2 - sand

3 - fine sand

4 - fine mud

5 - finer mud

Left 20m

1 - 2 hermit crabs, shells, and grass

2 - crushed shells and grass

3 - lots of sand, tiny bits of shells, and some grass particles

4 - little sand and mud

5 - silt and mud

Right 1m

1 - rocks and shells

2 - minute rocks

3 - sand and small shells

4 - mud

5 - fine sand

Right 10m

1 - shells, sticks, sea grass, moon snail, and opal worm

2 - sand, finer pieces of shells, sand, pieces of wood, and sticks

3 - finer sand (silt)

4 - mud

5 - clay

Right 20m

1 - rocks, shells, and wood

2 - crushed shells, rocks, and 2 snails

3 - sand and mud

4 - mud

5 - mud