Word Selection

1 Mammals which live in or near the sea are called ______ mammals. aquatic land marine fish 2 Sea mammals are able to stay under water for _______ periods of time.       short massive compressive extended 3 Something that sinks rapidly is ______ buoyant. negatively positively extremely increasingly 4 When a whale dives rapidly down, it can be called a ________ .       massive glide plunge swim 5 A fin that can be found at the back of a fish is called a ______ fin.       upper back rear dorsal