The humpback spotted splashing in the East River earlier this week has seemingly left the busy channel as quickly as it came — but not without leaving a whale-sized mark on the Big Apple. The US Coast Guard issued a stark warning for boaters to pull back their speeds and leave the cetacean alone,

People on the Brooklyn shore got a glimpse of the whale flashing its tail out of the water, according to the U.S. Coast Guard, which received multiple reports from spectators

New York City onlookers were surprised on Monday when a whale was spotted swimming under the Williamsburg Bridge on Monday, emerging from the surface.