Both are correct with ever so slightly different meaning.
The sentence, "They are going to the beach." is correct.
"Simply say "During the holidays the family went to the beach."
The correct spelling is seashells. An example sentence would be "there are plenty of seashells on the beach".
what is the adverb phrase in the following sentence ,The boy on the beach threw the stone into the sea.
The sentence "In Laguna Beach, California, there are many beautiful hillside homes." has been correctly punctuated with commas after "Beach" and "California" to separate the location details.
We like hot weather. We always go to the beach to swim.
The prepositional phrase is "as you walked along the beach".
Both are correct, depending on the situation. I stayed in my house. I stayed in a hotel. I stayed at the door. I stayed at the starting-line. I stayed at the beach for the weekend. I stayed at my friend's house.
Could be, because Hawaii would have a bigger land mass than Samoa
It is not correct, you have to say on the beach.
In the given sentence, the pronoun 'which' is an interrogative pronoun, because it introduces a question.The pronoun 'which' can also function as a relative pronoun, if the sentence read, "The beach which I like best is West Beach". In this example, the pronoun 'which' introduces the relative clause, 'which I like best'.
The correct answer would depend on whether the subjective or objective form of the first personal singular pronoun is required. The context does not make this clear. For example, it would be correct to say, "John gave the ball to Dan and me at the beach." The word 'to' is a preposition, and prepositions take the objective form of the pronoun. I can not, off the top of my head, think of an example of when "Dan and I at the beach" would be correct, unless someone were trying to use poetic language, such as, "Dan and I at the beach raced one another into the water." This example is, frankly, awkward language rather than poetic. However, "Dan and I are at the beach" is correct, since "I" forms part of the subject, and is the subjective form of the pronoun. Sometimes it helps to try the sentence without the compounding element: "John gave the ball to ... me at the beach." "... I am at the beach."