Another Scandinavian “USO” (not really, surface feature, Sweden)

Link with video:
Source: https://m.facebook.com/watch/?v=2891976814386429&_rdr

So, an odd thing moving across the surface of a Baltic Sea bay off Luleå, northern Sweden. Witnessed and filmed by two 12-year old boys.

Seems to have a frontal portion of vapor, and wake left behind it.

News article #1:
https://sverigesradio.se/artikel/upptackte-mystiskt-vattenfenomen-vid-lulnaset

In which a biologist says it’s probably not a cetacean ... Read even more