abd (version 0.2-6)

ShrinkingSeals: Seal Body Lengths and Age

Description

Body length (cm) and age (days) for 9,665 female Northern fur seals (Callorhinus ursinus).

source

Trites, A.W. and M.A. Bigg. 1996. Physical growth of northern fur seals: seasonal fluctuations and migratory influences. Journal of Zoology (London) 238: 459-482.

Examples

data(ShrinkingSeals)
str(ShrinkingSeals)

plot(ShrinkingSeals, pch = 16, cex = 0.5)
xyplot(length ~ age, ShrinkingSeals, pch=16, alpha=.65, cex=.6)