birdoptera

sea creatures

Penis/ Butt chin

This is a series of little illustrated factoids about animal reproduction, posted daily. I’d love to…
A little too stabby

The stylet also inserts something into the other slug that increases it’s fertility. Reference: Anthes, N.…
mucus cuddle

Reference: Davison, Angus, 2019. Leopard slugs mate in the most beautifully bizarre way – and nobody…
Worm lies

These poor worms in phyla Priapulida mate through external fertilization. This is a series of little…
Hooks and barbs

References: Klimley, A.P., 2013. The biology of sharks and rays. University of Chicago Press. Jones, C.J., Walker,…
size matters

Reference: Neufeld, C.J. and Palmer, A.R., 2008. Precisely proportioned: intertidal barnacles alter penis form to suit…
#1 Dad #2

It’s amazing how many articles talk about seahorse males being ‘pregnant’ and how few of them…
Auto-injection

There are a lot of buzzy new articles claiming that the squid ‘impregnated’ people’s mouths, so…
Detachable peen

Reference: Fusco, G. and Minelli, A., 2019. The Biology of Reproduction. Cambridge University Press. This is a…
#1 DAD

My original post was kindly corrected by Dr. Bonnie Bain, who pointed out that the secretions-…