What is going on with this P-8 Posiden that's been flying missions over the Med

Anyone know what that pod is underneath? I didn't know (and I'm assuming here) that any of these were modded for intel. What does the pod "sense"?  Additionally I'm assuming the bubble on top is for satcoms, right?

Been a while, a pleasure to see P-8A 169567 everytime.

Here she is coming back to KDAL from a 5 hour mission in the Gulf on 12/7/23.#aviation #avgeek #planespotting #Texas #USNavy pic.twitter.com/OdVZRmuBVr

— 𝙎𝙍_𝙋𝙡𝙖𝙣𝙚𝙨𝙥𝙤𝙩𝙩𝙚𝙧 ( 𝙏𝙓 ) 🇺🇸 (@SR_Planespotter) December 16, 2023