The things you can find under the sea that starts with M, one is Marlin. Also, Mantis ray, Mollusk, and a Minnow.
anchors algae
I can only think of Knickers right now.
gown
Yes.
Apopka is a city in Florida
Thing that you eat that start with the letter "C"CandyCreamCantaloupeCauliflowercorncheesechicken
Unicorn, universe, unicycle, umbrella, and undershirt are some things that start with "u".
X Article
overalls:(
Unity.
Some compound words starting with under include:underbrushunderclothesundercookundercoverundercutunderdoneunderestimateundergoundergroundundergrowthunderdevelopedunderhandedunderlineunderlyingundermineundernourishedunderpaidunderpantsunderpinningunderplayunderperformedunderratedundershortsundershotundersideunderstandunderstateunderstoodundertakeundertowunderusedunderwear
some thing you can find in Europe that starts with x a xylophone