| Grease ice is a later stage of freezing than frazil ice when the crystals have coagulated to form a soupy layer on the surface. |
| Tha frazil ice layer grows in all directions, and it finally bridges over the spaces between bars. |
| As the slush moves into a flatter, slower moving portion of the stream, the frazil will accumulate under the ice cover. |
| Thicker, soupy accumulations of frazil ice which are often herded by wind action are termed grease ice. |
| Hydrothane is proven to eliminate frazil ice and to control the growth of marine organisms such as barnacles and zebra mussels. |
| It is an object of the invention to provide an underwater frazil ice detector which is self cleaning. |
