enemies in Shovel Knight: Treasure Trove. They are seen in the Iron Whale (Treasure Knight's stage). Mantars seem to be based on Manta Rays, as their name implies.
They swim back and forth in a straight line and only have one hit point, but can be annoying, especially when the player character is climbing a ladder. They deal half a damage point and upon death they drop a 10 gold worth blue gem.
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