This strap-on combines function with a bit of whimsy. As opposed to using a realistically shaped dong this one features two dolphins joined near the tails that provide internal stimulation as well as external clitoral stimulation simultaneously. 

PipedreamProducts.com
Retailing: The Waterproof Diving Dolphin also has a corded remote control to power it through vibrations and pulsations.
Sizes: One size
Display: Hanging
MSRP: $$$