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Released by a joint Indonesian-U.S. ocean expedition, new high-definition images taken near the Indonesian island of Sulawesi reveal “never-before-seen views of seascapes and colorful, fascinating marine mammals” including chimaera, aka ghostsharks, and translucent sea cucumbers. Captured by a remotely operated vehicle, NationalGeographic.com shares a gallery of the rare and exciting images:

Expanded gallery of deep-sea creatures at NationalGeographic.com.

Total National Geographic aggregation.

Photographs courtesy INDEX-SATAL/NOAA