The sheer number of jellyfish that surrounded Teostra made a makeshift testudo formation around him with their bells, leaving him enclosed in a bubble that closed him off from the outside world. Though he could track the movements of his opponents due to their thermal signatures, he could not see the chakra being formed because he was not a sensor or had one of those ocular techniques. This meant that he would not be able to see the Rockets heading for his position, savery for the flames generates by their propulsion (if that's how they operated). But, he kept his hands on the ground to continue summoning the jellyfish. Seeing that the number was doubling each second, theyou would quickly fill the area.
The chains ripped through the ground and wrapped around his arms and legs, but this just further solidified his contact with the ground. Seeing as they were connected to Ray, he wonder if he would be able to pull Ray through the ground if he yanked really hard. But, he would do something different. This was when the missiles impacted.
What happened next was a peculiar thing. If the missiles struck the bells of the jellyfish, they would actually harmlessly bounce off and get sent back to wherever they came from. This meant 15 would go towards the sky while 5 would head back towards Ray. If they exploded on or before impact, the resulting explosion would then be reflected outwards back towards their creator. This was due to the jellyfish's natural ability of self defense.
They were creatures that swam through the sky on a combination of their own power and wind currents. This meant that they were practically defenseless against almost any kind of attack, so they adapted over many many years. Their bells had the strange property of being able to reflect all kinds of chakra, which meant that their only way of getting it was through the birds and bugs they ate. Because Bakuton is a kind of chakra, it would be useless against this armada of jellies. And because more and more kept coming, fighting here would basically be like shining a laser pointer in a hall of broken mirrors.
As for the chains, Teostra used his Kekkei Genkai to lower the temperature of the chains that were in contact with his body. Pulling any and all heat out of them should freeze them to the point where they easily shatter, regardless of if they were made of chakra or not. He still continued to hold that hand seal, waiting for the opportune time to use his next jutsu.
Tech:
Still summoning jellies
Still jutsu on standby
Heat siphon on chains
Jellies: Natural reflection