Even celebrities like Margot Robbie took time to celebrate Earth Day yesterday.

According to E! News, 23-year-old Robbie spent Earth Day in Nicaragua. To document the occasion, the "Wolf of Wall Street" actress posted a picture onto her Instagram page showing her happily holding a large fish while on a boat.

"Fish are friends not food! #HappyEarthDay," the photo's caption reads.

The picture may be surprising to some who are not used to seeing Robbie as a brunette, as the actress gained fame as a blonde. On Jan. 23, Robbie announced via Twitter that she dyed her hair brown for her upcoming role as Ann Burden in the Craig Zobel-directed film "Z for Zachariah."

So what else is Robbie up to these days?

Let's face it: After that sexy environment-friendly (and bikini-clad) Instagram post, what most really care about is her love life. Robbie reportedly does not have boyfriend as of now, but she was recently spotted with her likely ex, Henry Atiken. Atiken worked in the art department for "Z for Zachariah." Daily Mail spotted the duo walking side by side in central London last Thursday. Check out the pictures here. The pair's relationship reportedly formed on the set.

"She's got quite a few roles lined up, so she's going to be really busy ... But he is in the film industry too, so maybe they can find a way to maintain their relationship," a Stuff source cited as "Aitken's close friend" said back in February when dating rumors first began.

The relationship seemed even more likely once Robbie's opinions on actors were considered.

"No, I don't really wanna date an actor," Robbie told E! News in February.

Robbie is reportedly hanging around the United Kingdom until she has to begin work for her upcoming "Tarzan" film, in which she will play Jane.

"Z for Zachariah" also stars Chris Pine as Caleb and hits theaters in 2015 according to IMDB. "Tarzan" will reportedly debut during the summer of 2016.

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Follow Scharon Harding on Twitter: @SH____4.

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