I am waiting forI think You have experienced to many things the last 10 years to cover in 1 speak.
Make at least 4. Here are a few possible items just for You.
Starting with corals in a public aquarium.
Coral propagation for public aquariums.
Maintaining the water quality for public aquariums.
Choosing corals for a public aquarium.
Working with architects and the city to get fonds and build permits for a public aquarium.
Handling a nerd guest / visitor / friend / coworker in a public aquarium.
I am sure each one of those will have to be cut back not to exceed 1 hour.
And I am sure You have a few more subjects.
“Sweden, for Singles”