We use Priority Overnight for coral delivery and we ship on Tuesday and Wednesday only after contacting you, which we will do via email with order and shipping specific information prior to shipment. Monday is the most likely day for delays, and Thursday delays result in Monday deliveries; therefore we ship on Tuesday and Wednesday. If you require a shipping day other than Tuesday or Wednesday, contact us with any questions or requests. Tracking information will be sent to the buyer as soon as the order has been shipped. We check the weather in our area, the weather in your area, and the Memphis FedEX hub to help ensure a timely shipment, however we are not responsible for delays.