A) Inia geoffrensis B) Delphinus delphis C) Orcinus orca D) Tursiops truncatus
A) Seaweed and algae B) Fish and crustaceans C) Plankton D) Insects
A) Nile River B) Mississippi River C) Amazon River Basin D) Yangtze River
A) Growls B) Whistles and clicks C) Songs D) Roars
A) Camouflage B) Sharp eyesight C) Echolocation D) Long fins
A) They are completely social B) They are often solitary or in small groups C) They are always alone D) They form large pods
A) Flexibility in their neck vertebrae B) Large dorsal fin C) Tail flukes like whales D) Distinct black stripes
A) Tides B) Ocean currents C) Marine salinity D) River water levels |