The 1978 USS Stein Mystery: Did a Sea Monster Attack a Navy Ship?
TL;DR
In 1978 the USS Stein returned to port with its sonar dome shredded, and Navy scientists speculated a colossal squid might be responsible, suggesting a lost/unknown deep-sea predator could have attacked a modern warship; the incident remains unresolved and underscores how little we still understand about the deep ocean.
A Massive Deep-Sea Beast Crippled A U.S. Warship In 1978, and Left Scientists Speechless Indian Defence Review
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