Found swimming in estuary, what is it?

What is this? It was about 80mm long 20mm wide eyes and legs at one end like a shrimp then what appeared to be paddles at the other end, also segments on the bottom side but couldn’t get any pictures

Hi, Greg!

You need to join iNaturalist if you have not already and post these quite good photos there to get them identified (that is not done here on the Forum).

Welcome to the iNaturalist Forum!

iNaturalist itself was created to help people get answers to “what is this”. You can post your photos in an iNaturalist observation via the free mobile app or the iNaturalist website. Here’s more tips for getting started.

I’ve unlisted your topic to prevent confusion because the forum is where people talk about iNaturalist and related topics, but “what is this species” questions go on iNaturalist itself. Hope that helps!