BUM (Benthic Underwater Microscope) to the Rescue

from a Nature Communications article “Underwater microscopy for in situ studies of benthic ecosystems”

The BUM is an imaging system that provides the first in situ, underwater observations of benthic environments at nearly micrometre resolution. The diver-deployed, portable instrument can record dynamic natural processes and spatial patterns with minimal disturbance to benthic organisms or their surrounding physical environment. In addition, extended time-series recordings can be collected to reveal slow or periodic activities and processes, allowing for studies of animal behaviour (for example, individual coral polyps).

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(Note: Links to more videos are found in the Supplemental Information section at the very bottom of the article.)