Sunday, February 7, 2010

Law of Attraction - Baited Cams

Currently being passed around the blue blogs some interesting research video from Australia:

Baited Remote Underwater Video Stations (BRUVS) have been developed by AIMS scientists in order to monitor the vast areas of deeper inter-reef and shelf habitats inaccessible to research divers so that important bioregions there can be included in marine protected areas.

BRUVS consist of tourist-grade “HandiCam” video cameras in simple underwater housings made of PVC sewer pipe and acrylic, with a canister of minced pilchards on the end of a bait arm in the field of view. The housings are held in steel frames, and are deployed in strings of four to six under separate ropes and floats, to be picked up after one or two hours filming at the seabed.

Baited videos record species attracted to the bait plume or camera station, species attracted to the commotion caused by feeding and aggregation at the station, species occupying territories within the field of view of the camera, and species indifferent to the station but present in or passing through the field of view during the deployment.

The range of fish, sharks, rays, sea snakes and other animals sighted on BRUVS tapes has been remarkable – over 300 species to date, from 3cm leatherjackets to 3m hammerhead sharks.

1 comment:

George said...

The hammerhead footage seems like something out of a cartoon. I've watched this multiple times today and it never gets old.