** Recent discoveries in mollusk research highlight remarkable diversity and adaptability in deep-sea creatures. From giant squid with arms several times their body length to vampire squid, brooding octopuses, and massive clams, scientists have captured rare footage of these animals in their natural habitats.

Recent studies have revealed:

* The Pacific geoduck clam can reach 9 pounds in weight and outlive humans.
* Scientists discovered the second known living species of vampire squid off Hainan island, China.
* Brooding squids were spotted cradling translucent eggs in the Gulf of California.
* Rare footage showed deep-sea "octopus squid" with bioluminescent photophores attacking an underwater camera.
* The oldest-known sex chromosome emerged in octopus and squid between 455 million and 248 million years ago.

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Source: https://www.livescience.com/animals/mollusks