Individual crystals near the melting point are semiliquid and slick, allowing them to glide along other crystal planes and to fill in the spaces between them, increasing the ice's density.
12.
Another common characteristic is the spermaceti, a semiliquid waxy white substance filling the'case'or spermaceti organ in the whale's head, which is thought to be involved in providing ballast for diving and maintaining buoyancy.
13.
That geological activity, Lunine said, might actually be vulcanism-- not the kind of volcanic activity like Earth's, with its eruptions and flows of searing hot lava-- but rather of water thrust up from the interior in the form of slush kept semiliquid by some kind of chemical antifreeze.
