Which among these is the correct combination of aquatic mammals? (a) Dolphins, Seals, Trygon (b) Whales, Dolphins, Seals (c) Trygon, Whales, Seals (d) Seals, Dolphins, Sharks
Option B Whales, dolphin and seals are examples of aquatic mammals. Trygon and sharks are cartilaginous fishes.
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