Marks and Jacks Islands State Natural Area Preserve is a protected area located in the Chesapeake Bay in Maryland. The islands are home to various wildlife, including migratory birds, bald eagles, and ospreys. There are also several species of snakes, turtles, and fish that can be found in the surrounding waters. The islands are a popular spot for boating, fishing, and kayaking.

One of the main points of interest on the islands is the historic lighthouse, which was built in 1858 and is still in operation today. Visitors can take guided tours of the lighthouse and learn about its history and importance to the local community.

Another notable feature of the preserve is the salt marshes that surround the islands, which are home to a variety of plant and animal species. Visitors can take guided walks through the marshes and learn about the unique ecosystem that exists there.

Overall, Marks and Jacks Islands State Natural Area Preserve is a must-visit destination for nature lovers and outdoor enthusiasts. The best time of year to visit is in the spring or fall when the weather is mild and the wildlife is most active. However, visitors should be aware that the islands are only accessible by boat and may be closed during inclement weather.