Alaska's Bogoslof volcano, which is mostly underwater with just a small presence above the surface, has been active since mid-December 2016. Because it's winter, there aren't a lot of pictures. The Daily Mail has a really good article on this volcanic activity.
The third picture, with a volcanic ash plume behind the mountains, must have been taken from Dutch Harbor or Unalaska on Unalaska Island (the largest Aleutian island near Bogoslof). [I confirmed this with a quick image search.]
Here's a satellite image showing the whitish ash plume, and indicating the volcano's position relative to Unalaska Island.