Which among these is the correct combination of aquatic mammals?

Which among these is the correct combination of aquatic mammals?
  1. Seals, Dolphins, Sharks
  2. Dolphins, Seals, Trygon
  3. Whales, Dolphins Seals
  4. Trygon, Whales, Seals

Solution

Sharks and Trygon (sting ray) are the members of Chondrichthyes (cartilaginous fish) while whale, dolphin and seals are aquatic mammals belong to class Mammalia.

Asked in: NEET 2017

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