Current meters are specialized instruments designed to measure the speed and direction of ocean currents.

CTD profilers are used to measure the conductivity (related to salinity), temperature, and depth of seawater.

Echosounders emit sound waves and measure the time it takes for the waves to bounce off the ocean floor and return, providing information about the depth.

Rosette samplers are used to collect water samples at specific depths, allowing scientists to analyze water properties and constituents.

Secchi disks are simple but effective tools used to measure water clarity by lowering them into the water and recording the depth at which they disappear from sight.

Niskin bottles are specialized samplers used to collect water samples at specific depths, preserving the sample's integrity and preventing contamination.

Dissolved oxygen meters measure the amount of dissolved oxygen in seawater, which is crucial for marine life and ecosystem health.

Grab samplers are used to collect sediment samples from the ocean floor, providing insights into the composition and characteristics of marine sediments.

Current meters measure the speed and direction of ocean currents, providing valuable information for understanding ocean circulation patterns.

Plankton nets are used to collect plankton samples from the water column, allowing scientists to study the distribution and abundance of planktonic organisms.

Thermistors are temperature sensors used to measure the temperature of seawater, providing insights into ocean thermal structure and variability.

Sediment traps are used to collect sediment particles sinking through the water column, providing information about the composition and flux of marine sediments.

Salinometers measure the salinity of seawater, which is a crucial parameter for understanding ocean circulation patterns and water mass characteristics.

ROVs are used to collect samples and conduct observations on the ocean floor, providing access to deep-sea environments that are difficult to reach with traditional methods.

Nutrient analyzers measure the concentration of nutrients, such as nitrates and phosphates, in seawater, providing insights into marine productivity and ecosystem dynamics.