Such a happy dolphin! by Doodle Pantry.
Here is the set from Doodle Pantry:
Doodle Pantry Digital Challenge 36. Receive a set of holiday sentiments just for playing.
Pile it On - water
Brown Sugar - shades of blue
CASual Friday - polka dots
Pink Gem - spots and stripes
Crazy 4 Challenges - marine life
Great Impressions - anything
Simon Says - by the sea
Your Next Stamp - sketch