Related Clues:

• It may go with the floe
• Secure against leakage
• It makes an impression
• Bladdernose, for one
• Easter or Christmas issuance
• Elite Navy diver
• Imprint
• Flippered animal of the Pacific
• Corporate symbol
• Zoo attraction
• Make watertight
• Security feature
• Symbol of office
• Use a signet
• "Crazy" singer