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Which among these is the correct combination of aquatic mammals?
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- Dolphins, Seals, Trygon
- Whales, Dolphins, Seals
- Trygon, Whales, Seals
- Seals, Dolphins, Sharks
Correct Option: B
Sharks and Trygon (sting ray) are the members of cartilaginous fish while Whale, Dolphin and Seals are aquatic mammals belong to class mammalia.