All species of the Pipidae family are tongueless, toothless and completely aquatic.
From the en.wikipedia.org
Tongueless frogs such as the African Clawed Frog suck food from the pond into their mouths.
From the usatoday.com
It grinds ashore on the celebrated island, and within hours she is in the company of the white man and his mutilated servant, made tongueless by some cruel and nameless enemy.
From the time.com
More examples
Lacking a tongue; "tongueless moccasins"
Mute: expressed without speech; "a mute appeal"; "a silent curse"; "best grief is tongueless"- Emily Dickinson; "the words stopped at her lips unsounded"; "unspoken grief"; "choking exasperation and wordless shame"- Thomas Wolfe
The tongue is a group of muscles on the floor of the mouth that manipulates food for mastication. It is the primary organ of taste, as much of the upper surface of the tongue is covered in papillae and taste buds. ...