David Righton
speaker
154 appearances
1 recordings
1 series
first heard Nov 2025
last heard 26 Nov
David Righton’s voice in public audio — every appearance, attributed to the second.
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recordings per month · last 12 monthsRecordings per month over the last 12 months — 1 in all, peaking in Nov 2025 with 1.
Appearances
This is what drew me in to study eels when I saw some of the first ever traces of this.
What is this fish doing?
Why is it behaving like this?
The extreme environment that they're experiencing, going from 100 atmospheres of pressure to only 50 atmospheres of pressure, that's quite extreme.
It's amazing the tags can even measure that, that they survive that.
But these eels are doing it on a routine basis for day after day, month after month, on that romantic journey to the Sargasso Sea.
But one thing we know that they're not doing when they're making these big migrations is feeding, because they don't have a stomach that is active.
So it's got to be something to do with that migration, and as Caroline says, perhaps navigation, perhaps it's driven by light.
Certainly in the day, they're trying to avoid predators.
It doesn't always work, because there are predators that can see using sound.
There are things like squid in the depths, which might also be able to detect them at those low levels of light.
So there's still plenty of mystery, I think, left.
Well, that's one thing we haven't tested yet.
I'm not sure how we would be able to see if they did it when we weren't watching.
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