One of the simplest and most commonly used sediment corers.
The epibenthic sled is designed to trawl just above the bottom at the sediment water interface (the epibenthic zone).
This sediment sampler has a clam shell-type scoop setup.
The gravity corer allows researchers to sample and study sediment layers at the bottom of lakes or oceans. It got its name because gravity carries it to the bottom of the water body.
Source: Ocean Instruments
This instrument, like other corers and grab samplers, is used to sample sediments from the ocean floor.