David Righton

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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 over the last 12 months — 1 in all, peaking in Nov 2025 with 1.

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And we can reconstruct the life of that eel.

So the tag's acting a bit like a sort of black box in an aeroplane.

And we can try and understand where it is and how it's been behaving.

There are other types of tags that we've used.

I've got a little...

Example here, if you're interested.

So this is an example of another tag we use, which is an archival tag.

It doesn't communicate, but it drifts.

So when the eel dies, this tag will come out of the eel, and that will then drift back.

And in some cases, they'll drift back and land up on beaches, on shores, and they'll be recovered by people who are walking on beaches.

And this particular example recorded the migration of an eel for about 1,000 kilometres from the west of Ireland.

in about 2010, and at about 600 meters one day in that eel's life, it was eaten.

It was eaten by a long-finned pilot whale.

And we know that because the pattern of data that we get from the tag

allows us to look at the depths and the temperatures.

Obviously, the temperature increased above water temperature as soon as the tag was eaten to 37 degrees.

And then the depth sensor was recording then surface-based dives of the mammal that had eaten it.

Here is an example of predation, 600 metres.

There's no light, really, at 600 metres that we could ever distinguish.

And so, really, it's a fantastic example of what goes on in the deep ocean and how you can find these things out.

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