Terraria Map
Stats
| Classic | Expert | Master | |
|---|---|---|---|
| Life | 280 | 560 | 840 |
| Contact damage | 60 | 120 | 180 |
| Defense | 30 | 30 | 30 |
| Knockback resistance | 50% | 55% | 60% |
| Coin value | 5 silver | 12 silver 50 copper | 12 silver 50 copper |
Where and when it spawns
- Biomes
- Underground Snow
Drops
| Item | Chance | Amount | Modes | Condition |
|---|---|---|---|---|
 Milkshake | 1.33% (1 in 75) | 1 | All modes | |
 Ice Sickle | 1% (1 in 100) | 1 | All modes | |
 Frost Staff | 2% (1 in 50) | 1 | All modes |
Chances are for one kill, before Luck, Rate of fire or banners change anything. The Modes column says in which difficulties the game lists the drop.
Chilling ranged snipers firing frost beams through ice caverns
The Icy Merman is a dangerous ranged adversary stalking the Underground Snow biome during Hardmode. Endowed with 280 health and 30 armor, it strides along icy ledges, dealing 60 contact damage (120 in Expert and 180 in Master). From long range, it fires fast-moving Frost Beams that inflict Chilled and Frostburn, rapidly whittling down player health pools.
Securing frost staves and frozen scythes in glacial deeps
Because Frost Beams pierce unlit cavern darkness with high projectile speed, setting up solid stone barricades or mining behind cover neutralizes their ranged barrages. Slain Icy Mermen yield Milkshake at 1.33%, the Ice Sickle at 1%, and the magic Frost Staff at a 2% rate, allowing mages to cast their own chilling ice projectiles.
Trivia
- Icy Mermen continue firing Frost Beams across flooded cavern waters without suffering projectile drag.