The crossword solutions for the term 'PEA-GREEN BOAT PASSENGER' are OWL. An OWL is a nocturnal bird of prey that is typically found in wooded areas. They have large eyes and a hooked beak, and they are known for their distinctive calls. Owls are often associated with wisdom and knowledge, and they are a popular symbol in many cultures. In this case, the OWL is a passenger on a pea-green boat, suggesting a journey or adventure.