What exactly do the ornaments do??

I bought the sunken ship about an hour ago and I have all the other ornaments... but I'm not really noticing any difference with the store crowd or anything else. So do they really have a special purpose??

They do draw more customers into your store, although the effect is most noticeable when you have a lot of fish in your selling tank and you have researched higher levels of Advertising.

It might be my imagination, but I think I can get higher prices for fish the more ornaments I have. I had my canary firearrow up to $475 in one game and it still sold well!

It can be... for $650! Not selling very often, but it's a lot. Say... one for each two minutes.