LOOK: Fish frozen in wall of ice


Posted at Jan 16 2017 01:45 PM | Updated as of Jan 16 2017 03:19 PM

So how did those fish end up in a wall of ice?

The US Fish and Wildlife Service National Wildlife Refuge System first posted the photo on its Facebook page, urging followers to caption the photo.

It said the fish froze to death in a 4-foot wall of ice at South Dakota’s Lake Andes National Wildlife Refuge two summers ago.

Several Facebook followers gave several entries to the content, with one netizen saying that Queen Elsa from the Disney movie "Frozen" had "ruined yet another fishing trip."

Others criticized the FB page for asking for captions.

Photographer Kelly Preheim, who took the photo, explained that a fish kill had occurred on Lake Andes National Wildlife Refuge, causing the dead fish to float to the surface and get stuck in the ice.

"The lake levels were low due to drought. The fish kill was due to depleted oxygen. When thick ice (particularly if it gets covered with snow) forms on a lake's surface, it blocks out the sun, and the algae/plants don’t photosynthesize and produce oxygen, thus depleting oxygen levels. If the aquatic plants and algae subsequently die and decompose, this also uses oxygen, further depleting levels, so the fish essentially suffocate from lack of oxygen."

"The fish died and floated to the surface. When the weather turned even colder, the ice expanded pushing it toward the shore where it buckled and went vertical. or it may have been driven there by very strong winds. The thousands of frozen fish on the lake attracted hundreds of bald eagles, various gulls and American crows as they fed on the dead fish. It was quite a sight and it smelled very fishy out there for quite awhile."