Upstream Barrel Jellyfish

Just as we thought life couldn't get more exciting (after Saturday's wedding), along comes this jellyfish ...! We'd just been treated to lunch at The Cherub in Dartmouth, and were walking along the river front back to the car, when we spotted this HUGE jellyfish. Never seen anything like it! Certainly never seen such a big jellyfish - it must've been about a metre long. Amazingly awesome!

Anyone know what sort it is? (I shall research it online when I have a bit more time.) UPDATE: It's a Barrel Jellyfish AKA Rhizostoma pulmo.