Terramar

Terramar is a male Hippogriff/seapony and Silverstream's younger brother who appears as a supporting character in the season eight episode Surf and/or Turf.

Development
Terramar's name is derived from "terra", which is Latin for "earth", and "mare", which is Latin for "sea".

Depiction in the series
Terramar first appears greeting Twilight Sparkle and the Cutie Mark Crusaders near the Mount Aris train station, transforming from a seapony to a Hippogriff as he does. He serves as the subject of the Crusaders' Cutie Map-given mission as well as their introductory guide to Mount Aris/Seaquestria culture, giving them tours of both locations and explaining the union between the two races, and how some have chosen to return to their home on land, and others have decided to remain in the ocean. Like his sister Silverstream and fellow Hippogriffs and seaponies, Terramar wears a fragment of Queen Novo's Pearl of Transformation so that he can travel back and forth between land and sea.

After giving the Crusaders a tour of Mount Aris, he explains to them that he feels torn between his two homes because his father Sky Beak and sister Silverstream live on land while his mother Ocean Flow lives underwater. The Crusaders try to help him decide between the two, but a disagreement arises between Sweetie Belle and Scootaloo over which place is better.

Feeling more lost than ever, Terramar decides to live in a tree so that he doesn't have to be on land or in the water. Following an apology and pep talk from the Crusaders, Terramar talks with his parents, who tell him that he doesn't have to choose between either of his two homes and can keep going back and forth as he pleases. Terramar is overjoyed by this news, and he thanks the Crusaders for their help.

Terramar is also mentioned by his sister Silverstream in A Rockhoof and a Hard Place.

My Little Pony (mobile game)
Terramar is a character in Gameloft's mobile game. His in-game description states, "With a mom in the sea and a dad in the skies, this young Hippogriff felt caught between two worlds--until he realized he was an equal part of both!"

Quotes
"Excuse me! Miss Sparkle? Over here! Sorry I'm late."

- Surf and/or Turf

"Mount Aris is one great place to live. That's why Silverstream and my dad and some of my cousins came back here. But Seaquestria is another great place to live. That's where my mom is. [...] So no matter where I am, I feel like I'm letting someone down."

- Surf and/or Turf

"If you all can't even agree amongst yourselves, how am I supposed to make up my mind?! It's hopeless!"

- Surf and/or Turf

"I'm staying here, too! That way, I don't have to be on land or in the water!"

- Surf and/or Turf

"Oh, great! You're sorry, and I'm still confused! I'm staying in my tree."

- Surf and/or Turf