Thank you! I like your display picture :')
So I decided to design an alien last night, based on a somewhat well known tumblr fiction theme regarding how bizarre humans might be, compared to the rest of the intelligent races in the galaxy.
At my friend's behest, I've temporarily nicknamed this little fellow "Squishy"- he's a creature from a temperate planet of shallow, clear oceans (20 feet deep at most), slowly shifting sandbars and blue skies that see clement rainfall from time to time. By Earth's standards, it's an intensely pristine dream world.
Squishy's people are vaguely humanoid in shape, but are more akin to jellyfish in overall structure. They cannot survive above water for long, and because they have such low body density (acclimated to their planet's lighter gravity and a majority of time spent underwater), they can't leave their home planet without special water suits to keep them compressed and hydrated at all times. They have no natural predators, and haven't for most of their development as a species, seeing as their entire ecosystem is built on the symbiotic exchange of waste and excess resource between plants and other simplistic organisms.
Squishy's people live in prosperity and have a peaceful history with few conflicts, and no true wars. They live in small city clusters scattered throughout the planet's waters, and construct their smooth, white dwellings of the shed branches of the large coral-like plants that grow in forests on the ocean floor.
Because of their unchallenged development, Squishy's people typically have a very mild temperament- aggression, arguments and dishonesty are all extremely uncommon, and as such, they've evolved without need for facial expression as a nonverbal cue. This leads to some races finding them a little unsettling in social situations, as they tend to be unreadable and maybe a little too candid.
Squishy himself is a very curious soul, and enjoys observing and learning about other races. humans he finds especially fascinating for their complexity, and he's recently adopted a human pronoun in an attempt to create channels of mutual relation.