Saw like hundreds of tetras yesterday. At the aquarium, lol.
Also saw a very shy octopus and watched it for ten minutes until it crawled out for a few seconds and then hid again. still very cool and worth it.
Second best part was watching the rays. They were so graceful, like they were flying through the water. Worth the two hour trip out there. And I brought back a tiny snowglobe with an octopus figure in it :>