What is the thing on the right?
I know its a medusa on the left, but what about the right?
How can I tell? Can you see that opaque nose-like structure on the left of the "body"? It is a gas filled float called Pneumatophore. It is characteristic for them. Check out the Field Guide, you can keep it open in a new browser tab/window while classifying. It is helpful 😃
If you had any troubles, keep asking 😃 There are so many cool stuff in the oceans and also many mysteries but we can help with most of what you see in these pictures 😃