Hydro Torpedo

A Hydro Torpedo is a type of Nerf ammunition that was released in 1993.

Details
The Hydro Torpedo was an arrow with a small amount of sponge foam attached to the tip of it, which would, after dousing in water, cause a splotch of water to appear wherever the projectile made contact.

The Hydro Torpedo features a blue body, with orange fins, a yellow sponge tip, and was approximately 11" long.

History
The Hydro Torpedo was released under the Hydro line in 1993. There was an advertisement in the 1993 Kenner magazine, which consists of all the information we currently know about it today.

It would have been packaged with the Harpoon Crossbow.