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In page Ross seal:

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The total Ross seal population is estimated at around 130,000 individuals, but there is great uncertainty in this estimate (reported 95% confidence intervals range from 20,000 to 227,000).[1] Thus, very little is known about trends in the population. A genetic survey did not detect evidence of a recent, sustained genetic bottleneck in this species,[2] which suggests that populations do not appear to have suffered a detectable and sustained decline in the recent past.