Dewgong

Dewgong is the Sea Lion Pokémon and the evolved form of Seel, a dual Water/Ice type. Its snowy-white body allows it to thrive in frigid, icy seas, where it swims powerfully and is unbothered by intense cold; it is often said to be beautiful enough to be mistaken for a mermaid by sailors. Graceful and at home in glacial waters, Dewgong is a classic first-generation Pokémon associated with cold-water environments.

The Japanese name ジュゴン (Jugon) comes directly from 'jugon,' the Japanese word for the dugong, the real-world marine mammal related to the manatee. The English name 'Dewgong' is a slightly altered spelling of 'dugong,' likely tweaked with 'dew' to evoke water and cold while keeping the original animal reference. Both names thus point to the same aquatic creature, despite Dewgong's design also drawing heavily from seals and sea lions.