Where is it more difficult to obtain oil the ocean or dry land?

It is generally more difficult to obtain oil from the ocean compared to dry land due to the complex challenges associated with offshore drilling. Offshore oil extraction requires advanced technology and equipment to operate in harsh marine environments, along with higher costs for infrastructure and safety measures. Additionally, environmental regulations and potential impacts on marine ecosystems can complicate the process further. In contrast, onshore oil extraction typically involves more accessible locations and established infrastructure.