1. Or What do we use to study the marine world?
Tools of the Trade
Or What do we use to study the marine world?

2. Physical Properties
Thermometer – measures & records temperature at a particular depth
Hydrometer – measures density & temperature, used to find salinity

3. Physical Properties
THERMOMETER
HYDROMETER

4. Physical Properties
Niskin / Nansen Bottle – obtains water samples at a variety of depths
Secchi Disk – measures turbidity/visibility
turbidity - a measure of water cloudiness due to the amount of suspended matter in the water (soil, sediments, sewage, and plankton)
Clear water has a low turbidity level
Cloudy (or muddy) water has a high turbidity level.

5. Physical Properties
NISKIN/Nansen BOTTLE
SECCHI DISK

6. Physical Properties
Shipek/Peterson Grab - take a sample of the ocean bottoms

7. Physical Properties
CTD – measures conductivity, temperature & depth

8. Biological Properties
Plankton Net – net towed or dipped to gather plankton samples
Dip Net – retrieves a variety of samples from the water

9. Biological Properties
Sediment Screen – used to screen sediments for macro invertebrates

10. GPS
Provide radio-navigation system giving every place on Earth an address

11. Research Vessels
Alvin – research submersible used to locate bombs, Titanic, hydrothermal vents

12. Research Vessels
Alcyone – Jacques Cousteau’s turbo sail ship

13. Research Vessels
FLIP – 355’ floating instrument platform that can become vertical

14. Research Vessels
Trieste – first bathyscaphe to descend 35,600 ft to the bottom of the Mariana Trench