You got the mood of the scene spot on. Rarity being the one who doesn't play and bathes in the sun. Twilight the egg head caring about not getting sun burnt. Rainbow and AJ playing and being active. Fluttershy of course being kind and interacting to the animals. And Pinkie just being her adorable self. One of the first things I noticed is the foreshortening on Rainbow dashes fore-hoof is a bit off. Since it is in the back it should be a bit smaller than the front. The shading is simple and nice. Although the shadows seem to be a bit random. Some of the shadows drop to the back and some towards the front. Other than that it is still a great art piece worth a fav and a watch. Great Job, I hope you can improve upon the shadows and try to experiment with foreshortening.
Fabulous! You captured the personality of each pony great! Pinkie Pie, playing around, Fluttershy excited by small things and exploring different animals, Rarity lounging around and not taking risks of getting sandy or wet. Then, theres Rainbow Dash playing a game and theres Twilight Sparkle... responsibly applying her suntan lotion trying to avoid a burn. Theres apple jack... somewhat adventurous and going to explore the water. Great. One Con: Rainbow Dash's leg in the back on the left (the one not shown) is a little off... It should be a little smaller. Otherwise, fantastic... It is great because it's summer and everyone wants to hit the beach! I've been looking for a picture of this quality and idea. Absolutely worth the favorite and maybe even a watch! I hope this helps!!