However, they are not true shrimp (order Decapoda), but belong to the order Mysidacea, a large, almost exclusively marine order.    From Wordnik.com.  [Featured Articles - Encyclopedia of Earth] Reference

He further informed that the present study extends the researchers knowledge on the Mysidacea much further into the northern coastal waters of the Arabian Sea.    From Wordnik.com.  [Daily News & Analysis] Reference

1.1.10 Mysidacea.    From Wordnik.com.  [Crustacea] Reference