Blue whales, bottle nosed dolphins, bluegills, beluga whales, bass, and bowhead whales.
The only marina animal I could find was the Yellow Tang. and the Yellow Finger Spongeand the yellowtail amberjack
Here are some beautiful animals that begin with the letter N: Narwhal Nubian Ibex Numbat
Mice and monarch butterfly are grassland animals. They begin with the letter m.