in a particular manner. Long bubble rings also can form spontaneously in turbulent water such as heavy surf. Other uses of the term The term "bubble ring" is also used in other contexts. A common children's toy for blowing soap bubbles is called a bubble ring, and replaces the bubble pipe toy that was traditionally used for many years because the bubble pipe can be perceived as too reminiscent of smoking and therefore a bad example for children. Soapsuds are suspended on a ring connected by a stem to the screwcap of a bottle containing soapsuds. See also Carousel feeding Smoke ring Vortex ring toy References Further references Das, D. and Kumar, V. (2005) "Experimental investigation of the trajectory of compressible vortex rings", 11th AIAA/CEAS Aeroacoustics Conference, page 2953. . Hameroff SR, Kaszniak AW and Scott A (1998) Toward a science of consciousness II: the second Tucson discussions and debates Page 558. MIT Press. . External links Dolphin bubble rings Dolphin make and play bubble rings (video) Various videos of bubble rings Vortices