Pretty simple bug; "Glaciers" is the wrong terminology.

A Glacier is an ice sheet sat upon land.

Ice floating on water should either be "Icebergs", or "Sea Ice" (or if you want to be really specific, "Pack Ice" or "Fast Ice")

From the 3D model in-game it's not entirely clear which term is more appropriate.

I'd probably go with Icebergs, as it's a more recognizable & understandable term.