Loot anchor
From Inkipedia, the Splatoon wiki
A loot anchor is a device that has 8 legs and a red LED light at the top. A loot anchor is a device that is ether out in the open, buried in the snow or invisible. All varieties can be shot at with ink to destroy it. Some loot anchors can have Sunken Scrolls, Sardinium, Power Eggs or Decorations. Each variety can be tracked down with Smallfry (character).