Definition: Rewrite each original sentence in order to make it easier to understand by non-native speakers of English. You can do so by replacing complex words with simpler synonyms (i.e. paraphrasing), deleting unimportant information (i.e. compression), and/or splitting a long complex sentence into several simpler ones. The final simplified sentences need to be grammatical, fluent, and retain the main ideas of their original counterparts without altering their meanings.
Input: The eared seals or otariids are marine mammals in the family Otariidae, one of three groupings of Pinnipeds.

The eared seals or otariids are marine mammals in the family Otariidae. They are one of three groupings of Pinnipeds.