1) Animal class 2) Class 3) Class tentaculata 
Tentaculata is a class of comb jellies. The common feature of this class is a pair of long, feathery, contractile tentacles, which can be retracted into specialised ciliated sheaths. In some species, the primary tentacles are reduced and they have smaller, secondary tentacles. The tentacles have colloblasts, which are sticky-tipped cells that trap...
• (n. pl.) A division of Ctenophora including those which have two long tentacles.
Ten·tac`u·la'ta noun plural [ New Latin ] (Zoology) A division of Ctenophora including those which have two long tentacles. 
[n] - ctenophores have retractile tentacles
class Tentaculata noun ctenophores have retractile tentacles