It's tough getting fish along to the BRUVS party . . .
I am really keen to try DeepBRUVS deployments using sound vibration as an attractant. Sound propagates very easily in water, and spreads in 360 degrees. This is unlike the ‘smell’ plume from the berley, which will only travel down current and will become diluted the further away from the bait bag. Unfortunately testing sound to attract deep sea fish will have to wait for another voyage. Maybe deep sea fish will like music, or the sound of waves breaking over rocks. Note to self, try rock music, maybe Pearl Jam!
We have had three deployments of the DeepBRUVS now on the top of Tasmanian seamounts in depths of about 900 metres, and they have produced some interesting results. The vision from the baited unit shows eels and sharks swimming up to the berley bag, sometimes biting or just bumping it. The vision from the first deployment of the unit with flashing lights showed a lot of spikey oreos initially, which gradually moved away after the filming light came on. Unfortunately during the most recent deployment the intense pressure at depth was just too much for the ‘carnival’ light housing, and it imploded.
Read more in our CSIRO Investigator Seamount Corals Survey blog: www.nespmarine.edu.au/its-tou...
Негізгі бет Ғылым және технология It's tough getting fish along to the BRUVS party
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