Sea creature solved!

I just received an email from the Australian Museum who have answered my question:

http://www.austmus.gov.au/fishes/fishfacts/fish/hmonopt.htm

I wonder if they actually meant to call their site "fishes" or if it's a mistake.

The email:

From: "Search & Discover"

Date: 3 April 2009 11:28:08 AM

To: 

Subject: Australian Museum Enquiry #11041

Dear Jenny

Thank you for contacting us here at the Australian Museum. We have received your email and it has been recorded as Australian Museum Enquiry #11041. If you need to contact us about this enquiry, please reply directly to this message keeping the text in the subject field unchanged.

Your photo shows a young dead Numbfish or short-tailed Torpedo Ray Hypnos monopterigium

These are a species of electric ray which overpower their prey and defend themselves from predators by delivering a reasonably powerful electric shock. The following weblink can provide more information:-

http://www.austmus.gov.au/fishes/fishfacts/fish/hmonopt.htm

Kind regards,

Martyn Robinson

Naturalist