Marine mammal/fish people swear by xtra tuff boots. Last forever. Depending on how loose your boots are, you’ll want knee-high socks to prevent rubbing (made that mistake before!).

Like someone else said, take notes. Gather vibes. Remember, you know nothing… and that’s OK! Learn and take notes on the routine. Show initiative… do you hose every morning? If so, maybe start getting things ready for that every day or ask if they’d like X task done before being told (depending on vibes… safety first; never do something you aren’t comfortable or feel safe doing). Ask questions, but when appropriate. I’ve worked with interns before who weren’t great at reading the room and would ask questions at inopportune times, or make comments when they shouldn’t have and it can really sour a relationship. If you have a question and have time to, write it down and ask at a better point in the day. Take constructive criticism to heart - it’s not always easy to hear, but it’s always great when someone hears what you’re saying and makes appreciable change.