A CTD profiler is a versatile instrument that simultaneously measures conductivity, temperature, and depth of seawater, providing valuable information about the physical properties of the ocean.

An ADCP uses acoustic signals to measure the velocity of water currents at different depths, providing detailed information about ocean circulation patterns.

A rosette sampler is a device equipped with multiple water sampling bottles that can be opened and closed at specific depths, allowing researchers to collect water samples from different depths simultaneously.

Oxygen sensors, dissolved oxygen meters, and oxygen probes are all instruments used to measure the concentration of dissolved oxygen in seawater, providing insights into the health and productivity of marine ecosystems.

A tide gauge is an instrument used to measure the height of tides, providing valuable information about tidal patterns, sea level variations, and coastal processes.

Nutrient analyzers, spectrophotometers, and fluorometers are all instruments used to measure the concentration of nutrients, such as nitrates, phosphates, and silicates, in seawater, providing insights into the productivity and biogeochemical cycles of marine ecosystems.

A sediment trap is a device used to collect sediment samples from the seafloor, providing information about the composition, accumulation rates, and sources of sediments in marine environments.

Fluorometers, spectrophotometers, and chlorophyll meters are all instruments used to measure the concentration of chlorophyll, a pigment found in phytoplankton, providing insights into the abundance and productivity of marine plant life.

A wave buoy is an instrument used to measure the height and period of waves, providing valuable information about wave patterns, energy, and coastal processes.

Atomic absorption spectrometers, inductively coupled plasma mass spectrometers, and X-ray fluorescence spectrometers are all instruments used to measure the concentration of heavy metals in seawater, providing insights into the sources, distribution, and potential toxicity of these contaminants.

A plankton net is a device used to collect plankton samples from the water column, providing information about the abundance, diversity, and distribution of planktonic organisms, which play a crucial role in marine food webs.

Carbon dioxide sensors, total alkalinity analyzers, and pH meters are all instruments used to measure the concentration of carbon dioxide in seawater, providing insights into the ocean's role in the global carbon cycle and ocean acidification.

A multibeam sonar system is an instrument used to map the seafloor and underwater地形, providing detailed information about the bathymetry,海底地形features, and geological structures of the ocean floor.

Turbidity meters, nephelometers, and transmissometers are all instruments used to measure the concentration of suspended particulate matter in seawater, providing insights into water clarity, sediment transport, and the dynamics of marine ecosystems.

A drifter is a device used to track the movement of ocean currents, providing valuable information about surface circulation patterns, transport pathways, and the dynamics of the ocean.