Solve, create, share and talk about jigsaw puzzles

Algal bloom (hard)

Bookmarked Bookmark Solve this jigsaw puzzle later
ShareShare with your friends
ReportReport as inappropriate
Solve puzzle
442 pieces
16 solves
Solve puzzle

Thanks for sharing. Here is your html-code:

Why are you reporting this puzzle?

Due to an exceptionally warm summer in 2018, the Osterbek canal in Hamburg, Germany, shows a rapid increase of cyanobacteria, commonly known as "algal bloom", which causes the water surface to turn green.
Why this advertisement?


  1. sirwilliam17045:19
  2. rebsmd47:23
  3. hartley11:41:38
  4. Phidadle1:44:09
  5. F011:44:36
  6. langeland22:01:25
  7. IrishCalypso2:06:45
  8. johnwayne2:41:22
  9. HNW3:00:55
  10. kianna103:32:54


Please sign in to comment. Don't have a profile? Join now! Joining is absolutely free and no personal information is required.

Why this advertisement?