Added 14 minutes later
Answering your questions.
1. I recently noticed a contest here and just decided to participate...
2. Children of the Sea can move on land: Mermaids crawl, and the warriors support themselves with their tridents. The crab and crayfish people move quickly on any surface. The Wonder moves slowly due to its weight... The Amphisbaena, like any snake, crawls by wriggling its entire body. Unicorns do something like jumps. The octopus slides like the one-eyed creature from the Dungeon used to. And the dragon (since it has no wings) skillfully "runs" across the field.:)