Fill in the Blanks Under the SeaOnline version Practice this weeks vocabulary by filling in the correct word by Grace Reck 1 fish jellyfish starfish rivers turtles scales gills ocean Sharks In the there are many different types of . Fish and other sea creatures can live under water by breathing through their . Just like fish , and also live under the water , but they do not have gills or like fish do . and whales also live under the water , but they are much bigger than most fish . Fish also live in and lakes . In rivers you can find too .