from the source:
 
Gallus landed on the grounds of the School of Friendship and started looking around for Silverstream. She wasn’t inside the school or in the atrium garden, and now she was late for the late afternoon study group that Smolder had set up for the three of them.
 
For some reason that the griffin couldn’t entirely understand the dragon had decided that ‘he’ should go look for the wayward hippogriff. Smolder’s explanation for sending him out was that he could fly. Which made no sense since Smolder could fly just fine, but recently he’d found it very hard to deny her requests of him.
 
The blue griffin noticed something on the school causeway and started trotting up to it. Getting closer he noticed it was most of mare’s school uniform carefully folded and resting on the dressed stones. Suddenly he heard surface in the water next to him. Looking over he saw Silverstream floating in the water. The hippogriff had transformed into her seapony form.
 
“Gallus! Hi there! Whatcha doing?”
 
The mare partially pulled the top part of herself out of the water and then crossed her arms and rested them on the stone in front of her. At this point the male griffin realized that only part of mare’s uniform that was not sitting folded, and dry, on the stones was the white cotton t-shirt that was currently soaked and clinging to the mare.
 
The griffin blinked and made an concerted effort to keep eye contact. “Um, Silverstream. Why are you wearing your t-shirt while swimming? And nothing else?” He quickly added.
 
“Oh! Well! Back in my homeland I don’t wear anything while swimming, but some of the teachers thought it was inappropriate or something. She looked back at her tail. Apparently my tail is okay…
 
“ She glanced down at her breasts. “But apparently some found these to be, uh, well, distracting. So the teachers asked me to cover them up.” She looked back up at her friends. “So that’s what I did. Now they’re not distracting! Right?”

Shoo be do indeed!  
I’d call upon that sea pony.

@AzriBoss  
Just imagine swimming in that water and she just pops up against you in her usual friendly fashion.

Hubba oh hubba

The cutest pic of Silverstream I’ve ever seen.