It's much harder for a sperm to swim, than it is for a sperm whale. Why? This excellent TEDed video explains:
I think I'll use it next year, during the 'reproduction' section of my first-year biology paper :)
Science & Engineering - Creating the Future!
Faculty of Science & Engineering - Te Mātauranga Pūtaiao me te Pūkaha
The University of Waikato - Te Whare Wānanga o Waikato
Last modified: Tue Nov 19 09:04:35 2013