This video is hosted by YouTube. Playing it connects your browser to YouTube (Google). We use YouTube's privacy-enhanced mode, but YouTube may still store data on your device and receive your IP address.
NOAA Ocean Exploration's ROV found an unusually large solitary hydroid, over a metre across, at about 1,770 metres on a seamount in Papahānaumokuākea. Watch the scale cues the ROV gives for its size.
Written by us. YouTube's own title appears below when available.
Species
hydroid
Review
Checked by an AI assistant using the publisher, description and sample frames, then approved by the site owner. Not yet watched in full by a person. (2026-11-05)