After receiving the message, Luke immediately had his Level 2 clone head for the Norwegian Sea, and also told the Avengers that they didn't need to go.
Steve, Natasha and Hawkeye would be useless against the giant octopus.
Even Tony couldn't use Mark 43, despite the Hulkbuster armor being the most resistant and Thor and the Hulk being the only ones who would be able to break it.
However, the giant octopus was still moving through the ocean right now, and the underwater base had already lost contact with the two underwater vessels it had sent out, so the octopus's whereabouts were completely unknown.
Other people wouldn't be able to do anything.
To Luke's surprise, the Big Dipper clone didn't find the octopus even after two days.
The satellites that had been deployed took turns monitoring the Norwegian Sea, as well as the Greenland Sea and the Barents Sea nearby, but didn't find anything unusual.
Luke flew the Quinjet around these waters.