Atopodentatus (5e Creature)
From D&D Wiki
Medium creature, unaligned
Quack. If the Atopodentatus sees a creature that is not threatening it happily quacks at them, the creature makes a DC 12 Charisma saving throw. If they fail the Atopodentatus gets advantage on charisma checks with the creature. if they succeed they get a d6 bardic inspiration.
Galumph. If the Atopodentatus is 50 feet away from the water it can use its bonus action to flee to the water not provoking opportunity attacks by rising up on to its back legs and running.
Multiattack. The Atopodentatus makes two attacks: one with its tail and one with its bill. The target can't be the same. Bill. Melee Weapon Attack: +6 to hit, reach 5 ft., one creature. Hit: 6 (1 +5) Piercing damage.
Tail. Melee Weapon Attack: +6 to hit, reach 5 ft., one creature. Hit: 11 (1d12 +5) Piercing damage.
The Atopodentatus is an anomaly, filling the role of Marine iguanas where they are really not needed. By all means they should have been wiped out but there is just something charming about them. Some races of marine peoples use them over Giant seahorses, liking their unique vocalizations.