Merhags are slimy survivors of the darkest trenches, resembling half human, half hagfish creatures.
Amphibious: Can breathe both air and water.
Low-light vision: See twice as far as humans in dim conditions.
Weapon proficiency: Trident, net, heavy crossbow.
Slime burst: As a reaction, once per long rest, impose disadvantage on a grapple or escape a grapple.
Toxic secretion: Resistance to poison damage.