| Much of our project concerns retrieving intact mud from the sea floor. We have the convenience that since we are sampling at depths that are accessible to diving this is relatively simple. We have cylindrical cores that have a removable bottom and a mesh screen on the top. We remove the bottom, push the device into the mud and the water escapes through the mesh. We stick our hands into the mud to cup the bottom of the cores and pull them out to cap them. Because of the mesh screen the animals that live in the top few millimeters of the sediment are trapped and the core pushes in easy. We then sieve the samples and preserve the animals in formaldehyde. In the samples we found a wonderfully big polycheate worm. |
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