Sometimes a picture turns up that simply demands a caption contest.

Submit your caption of this photo through the weekend and we'll post up some of the best submissions on Monday 2/9!

Make sure you are logged into your profile when submitting so you can get all the glory. Click here to see all of the submissions and up vote your favorites.

Happy captioning!

September 24 is International Save The Koala Day, and we thought we'd share this article by Take Part that gives a glimpse into the lives of koalas and some of nature's other incredible creatures.

You can join in today's Save the Koala Day by captioning this marsupial's photo now. Use our builder by clicking the image and adding your best caption by 12pm PT Friday, 9/26. The top entries will be published on Saturday morning for you to vote and decide which were the best!

If you don't have a caption to enter, you can still click here to read and vote on all the captioned submissions.

We all know sea otters are awesome, but did you know they're helping to fight climate change? The good people at Take Part have the scoop!

In celebration of these hand holding eco-heroes, we want you to caption this photo! Click and use our builder to add your best caption before 12pm PT Friday, 9/26. The top entries will be published by Saturday morning for you to vote and decide whose was the best!

Even if you don't enter your own submission, click here to see all the captioned submissions.

By the way, if you're more of a fan of captioning marsupials, stay tuned for another contest this Wednesday (9/24).