Dear Mr. Marino,
Thank you for posting your request on History Hub!
We searched the Access to Archival Databases (AAD) and located the Data Files Relating to the Immigration of Italians to the United States, documenting the period 1855 - 1900 in the Records of the Center for Immigration Research (Collection CIR) that includes 1,992 files pertaining to the surname Marino and 15 files for the surname Merino. Please use the Manifest Identification Number to search the Manifest Header Data File, 1834 - ca. 1900 in AAD to determine the name of the ship, port of debarkation, and date of arrival for that person.
Plus, The Statue of Liberty—Ellis Island Foundation, Inc has an online searchable database of 65 million records of passengers arriving to the Port of New York from 1820 to 1957 that may include the person(s) you seek.
We suggest that you review NARA’s Resources for Genealogists, as well as the History Hub Blog titled Suggestions and Advice for Family History Researchers. Also, the FamilySearch Research wiki for United States Genealogy may be useful.
We also suggest that you search the Antenati: Italian Digital State Archives; Archivio di Stato di Messina - Ministero della cultura; and FamilySearch Italy Online Genealogy Records websites for additional information and/or resources.
You may wish to search Ancestry’s Merino Name Meaning & Merino Family History; and
Marino Family History | Find Genealogy Records & Family Crest for family information. There may be a fee for using Ancestry. Instead, please check for access at your local library as many library systems subscribe to these sites, making them free for their patrons.
We hope this is helpful. Best of luck with your family research!