A Bumper Year For Argonauts

[Phil]

It seems that it is a good year for collecting argonaut shells; if you live in Yorke, Australia, that is. Anyone know why these shells are washed up every seven years or so?

Nautilus Shell Bonanza

BTW, I know the argonaut and nautilus are different animals, but that's what the article is called!

 

[tonmo]

Nice shells there!

Gee, if they found it with the nautilus still alive in the shell, then maybe they should have returned it to the sea??? :x

Isn't El Niño on a 7-year cycle or so?