Aqualablys

Amphibious. The Aqualablys can breathe air and water.

Limited Telepathy. The Aqualablys can magically transmit simple messages and images to any creature within 120 feet of it that can understand a language. This form of telepathy doesn't allow the receiving creature to telepathically respond.

Multiattack. The Aqualablys makes two attacks: one with its tentacles and one with its claws.

Tentacle. Melee Weapon Attack: +6 to hit, reach 5 ft., one target. Hit: 7 (2d8 + 4) bludgeoning damage. If the target is Medium or smaller, it must make a Dexterity saving throw (DC 14) or be grappled and restrained until it ends or until they break the grapple (same DC). It can do this to two creatures at once, as long as they are also Medium or smaller, and can release a creature from its grasp as a bonus action

Claws. Melee Weapon Attack: +6 to hit, reach 5 ft., one target. Hit: 8 (1d8 + 4) piercing damage. If the target is a creature, it must succeed on a DC 14 Constitution saving throw or take 6 (2d6) poison damage.

Bite. The Aqualablys brings a grappled creature into its maw and bites down with its squid-like beak. The grappled creature must make a Dexterity saving throw (DC 15) or take 10 (2d6+4) piercing damage and remain grappled and restrained. On a successful save, the target takes half the piercing damage and escapes the grapple.

Intrusive Thoughts. As a reaction, once per round, the Aqualablys can choose to take half of the damage of an oncoming melee strike, and deal said damage to the attacker in the form of psychic damage.