The National Aquarium: Water blog

Color-Changing Cephalopods

Octopuses, along with several other molluscan members of the Cephalopoda class, are masters of camouflage. Watch how octopuses use their color-changing skills to their advantage!


Arms vs. TentaclesArms vs. Tentacles

If you think octopuses have tentacles, you’re not alone—but the eight limbs attached to an octopus’ head are actually arms. Learn about the difference between arms and tentacles!


Calendar of Events:

   Evening Lecture
OCTOBER 17, 2017 • 6:30 PM – 8:30 PM

JUNK Raft: Our Voyage Toward More Ocean, Less Plastic

Conservation Event
OCTOBER 28, 2017 • 9:30 AM – 12:30 PM

International Coastal Cleanup at Masonville Cove

Evening Lecture
NOVEMBER 2, 2017 • 6:30 PM – 8:30 PM

As the Tide Rises: Decades of Watching Ice Sheets Change