Consider the following:
1. Sea Urchins
2. Elephant seal
3. Sea lions
Which of the above is/are mammal/mammals?
Sea urchins are small, spiny, globular animals that, with their close kin, such as sand dollars, constitute the class Echinoidea of the echinoderm phylum. Sea lions are sea mammals characterized by external ear flaps, long foreflippers, and ability to walk on all fours legs. Elephant seals are large mammals, oceangoing seals in the genus Mirounga.
This question is a part of GKToday's Integrated IAS General Studies Module