The sea lily (Bourgueticrinida) is an order of marine animals referred to as crinoids. They are typically found in deep ocean waters (to a depth of about 18,000 feet). In their adult form, they are attached to the sea floor by means of a stalk.
Little is known of Henry Hudson prior to 1607, when he was hired by the Muscovy Company of the Kingdom of England to find a northern route to the Far East. He and a crew of ten sailed on the 80-ton Hopewell. They reached the east coast of Greenland and traveled north to the ice pack.
The US Coast Guard adopted the concept of geographic districts when it absorbed the US Lighthouse Service in 1939. Previously, it had no formal segmentation of its chain of command based on geography. Rather, the chain of command was grouped around function.
The trireme was utilized as a warship in the Mediterranean Sea from the 7th century BC until the fall of the Roman Republic at about the commencement of the Christian era. No other warship design has survived in service for a comparable period. It was truly the dominant battleship of its day.