← on nowLGR-025 · v0.1.0 · model · count (bled); estimate (deaths)

How many horseshoe crabs are killed every second, every day, every year?

horseshoe crabs · Limulus polyphemus · united states
bled for their blue blood
650,000
a year
0.021
a second
1,780
a day
died of it
100,000
a year
3.17e-3
a second
274
a day

method ASMFC 2023 biomedical bleeding counts; mortality from Krisfalusi-Gannon et al. 2018.

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<iframe src="https://thetoll.earth/?channel=horseshoe%20crabs" width="100%" height="520" style="border:1px solid #D9DDDB" title="the toll · horseshoe crabs"></iframe>
or the whole broadcast, every channel, the same for everyone:
<iframe src="https://thetoll.earth/?embed=1" width="100%" height="520" style="border:1px solid #D9DDDB" title="the toll · on now, everywhere"></iframe>

how this number is built

method
ASMFC 2023 biomedical bleeding counts; mortality from Krisfalusi-Gannon et al. 2018.
range
bled 600,000–1,000,000/yr; mortality 10–30%
confidence
count (bled); estimate (deaths)
weakness
post-release mortality is estimated, not observed.
dispute
dispute LGR-025 · corrections are credited
data
channels.json (sign-in) · full entry · CC BY 4.0
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