Monday, April 22, is Earth Day and, as is par for the course, Apple’s Chief Executive Officer, Tim Cook, is celebrating.

This year, Cook is using the “Shot on iPhone” marketing campaign to help the cause. Over on his official Twitter account he shared four different photos of nature, all shot on the iPhone. In the first image, which is at the top of this article, we can see a pair of penguins hanging out, enjoying the (cold) weather. In one photo we can see a tiny frog relaxing on a plant.

The third shot is a close-up of a lizard’s head, showing off the beautiful colors. And, finally, a lone giraffe keeping an equally single tree on the plain as rain falls in the background. Each of the photos are pretty great, and you can see them all in Cook’s original tweet:

The photographs were captured by Esther Havens, Sarah Norvell, Jason Barnes, and Vincent Riemer.

Apple has had a bit of a focus on nature. In its latest “Shot on iPhone XS” videos, Apple showed off the power of Mother Nature. And, before that, caught the preservation efforts of a program trying to keep Whale Sharks in the Maldives around.

[via @timcook]