The backward-swimming deep-sea fish typically measured between 1 and 2 feet in length and were seen at depths of roughly 2.8 miles to 4 miles down, the study said.

The backward-swimming deep-sea fish typically measured between 1 and 2 feet in length and were seen at depths of roughly 2.8 ...

The backward-swimming deep-sea fish typically measured between 1 and 2 feet in length and were seen at depths of roughly 2.8 miles to 4 miles down, the study said.

The backward-swimming deep-sea fish typically measured between 1 and 2 feet in length and were seen at depths of roughly 2.8 miles to 4 miles down, the study said.

The backward-swimming deep-sea fish typically measured between 1 and 2 feet in length and were seen at depths of roughly 2.8 miles to 4 miles down, the study said.

Miles below, a deep-sea fish approached the camera’s bait then, changing its mind, swam backward to escape. The footage turned out to be a first-of-its-kind sighting — but it wasn’t the last.

The backward-swimming deep-sea fish typically measured between 1 and 2 feet in length and were seen at depths of roughly 2.8 miles to 4 miles down, the study said.

The backward-swimming deep-sea fish typically measured between 1 and 2 feet in length and were seen at depths of roughly 2.8 miles to 4 miles down, the study said.

The backward-swimming deep-sea fish typically measured between 1 and 2 feet in length and were seen at depths of roughly 2.8 miles to 4 miles down, the study said.