The name sea slug is most often applied to nudibranchs, as well as to a paraphyletic set of other marine gastropods without obvious shells. sea cucumber also looks slug-like and is sometimes loosely called a sea slug, but it is not a gastropod. Sea slug is a common name which is applied to some marine invertebrates that more or less resemble terrestrial slugs.
Clue: Vertebrae formations. Vertebrae formations is a crossword puzzle clue that we have spotted 3 times. There are related clues (shown below). Referring crossword puzzle answers. Likely related crossword puzzle clues.
1 5 lumbar vertebrae in the lower back. 2  5 sacral vertebrae which are fused together to form 1 bone called the sacrum and 4 coccygeal vertebrae that are also fused together to form the coccyx or tailbone.  The vertebrae are refered to by their name and number, counting down from the top of the spinal column as follows: