Plankton

About the shape and function of different specimens
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Gigi
Posts: 11
Joined: Mon Jul 11, 2022 8:01 pm

Plankton

#1 Post by Gigi » Tue Aug 02, 2022 8:28 am

Does any one know the times of vertical migration in plankton?
I'm doing some research and observations but I get different results every day...

Sure Squintsalot
Posts: 393
Joined: Mon May 16, 2022 3:44 pm

Re: Plankton

#2 Post by Sure Squintsalot » Wed Aug 03, 2022 2:05 am

Pertinent to your research, scuba diving resorts and guides are increasingly providing "Black Water Dives" in which a boatload of scuba divers are brought to a cabled site near a subsea shelf at dusk. Lights are lowered to about 60 feet, or so, then, divers, equipped with their own lights, are clipped to the cables and slide down to around 40 feet. In the blackness, they watch for the nightly upward migration.

I'd google "scuba, black water diving" and contact them to see what times they head out. Those schedules are pretty fixed by past success, so they would know for sure. Here're a few links:

I was scheduled recently for this: https://westenddivers.com/black-water-diving/, but one of the two captains required to be on board was not available and so the dive was cancelled.

I'm scheduled for this one though: https://scandidivers.com/blackwater-div ... to-galera/

Even if you dive at night, near a shelf with deep water beyond, well past dusk, you miss the vertical movement, but are entirely surrounded by this plankton.

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