Plankton Net: This instrument is used by Biological Oceanographers. This oceanographers study living things in the ocean such as plants and animals. They use certain instruments to help them study these creatures. The plankton net, which they use, is used to collect plankton. The plankton is then examined through microscopes.

CTD: This instrument is used by Chemical Oceanographers. These oceanographers study chemical reactions that occur both in the ocean and the sea floor. CTD stands for conductivity, temperature, and depth. This instrument is lowered into the water and measures what the name intends on it to measure.

FLIP: FLIP is an instrument used by Physical Oceanographers. This oceanographer studies changes and motions of the sea water, winds, tides, and currents. FLIP is a boat that, well, flips up. This boat is used to study wave heights. This is used to check water levels around the world. 

Push Core Sampler: This instrument is used by geological oceanographers. Geological Oceanographers study the physical features on the bottom of the ocean floor. This instrument is used by taking machines underwater to drill for soil. The tube is drilled into the ground and takes samples of the soil for them to be studied and examined later.

Oil Rig: Oil rigs are used by Geophysical Oceanographers. These oceanographers study the features below the ocean floor and also search for fossil fuels. Oil rigs do exactly what one would expect them to do and what the job descriptions require it to do. Oil rigs help look for oil underwater and other fossil fuels and natural resources.