Finding the predicate in the following sentence.

SOURCE: Can you help me find the predicate of this

The predicate is "is".

SOURCE: Some jellies lives in the shallower part of the

The correction in the sentence has to do with a plural subject. If the subject is Plural,then whatever it's doing is going to be singular. If the subject is singular and whatever it's doing is going to be plural. So, it should read, the jellies live, not lives. The subject is obviously the jellies. The predicate is the part in the sentence that modifies the subject. This could include telling us what the subject is doing, and in this case, it would be living in the shallower part of the sea.