Hemingway would fit your criteria well. I would specifically recommend "The Short, Happy Life of Francis Macomber." It is about a man, his wife, and the hunting guide on a hunting safari in Africa. It has some great tense moments during the hunt and a shocking ending that leaves the students debating what actually happened.
There are so many great ones to choose from, but these are just a few that immediately come to mind.
POEMS: "The Charge of the Light Brigade"--Tennyson; "The Cremation of Sam Magee"--Service; "Sea Fever"--Masefield; "Gunga Din"--Kipling; "The Odyssey"--Homer; "The Rime of the Ancient Mariner"--Coleridge; "Paul Revere's Ride"--Longfellow; "Jabberwocky"--Lewis Carroll.
SHORT STORIES. "The Most Dangerous Game"--Connell; "The Quest for Blank Claveringi"--Highsmith (about giant, killer snails!); "Rikki-Tikki-Tavi"--Kipling; "To Build a Fire"--London; "The Short Happy Life of Francis Macomber"--Hemingway
The most famous (at the moment) adventure short story is Alice in Wonderland. When the movie version is in theatres it is predicted that for the first time the story will get the illustrative credit that CS Lewis would have wanted to express.
Additional short, adventure stories are: Jurassic Park, the Selfish Giant (Oscar Wilde), The Canterville Ghost (Oscar Wilde), Maelstrom (Edgar Allan Poe), the Cask of Amontillado (Poe) - and mostly all Poe is short stories as well as Oscar Wilde.
Poems, I would suggest Invictus by John Donne (quite powerful), In Flander's Fields (very good), and The Ballad of Reading Gaol *pronounced: 'redding jail'* (Oscar Wilde),
When I think of adventure stories I believe that Robinson Crusoe, Swiss Family Robinson, and Gulliver's Travels all fit the bill nicely. They all were high seas adventures that took the main characters on different adventures that altered the direction of their lives. Anther classic adventure story is Treasure Island. Other favorite adventure stories include Huck Finn and The Secret Life of Bees. The second choice may not seem like an adventure, but it is a journey that the young girl and her babysitter make trying to discover more information about her mother.
In regards to adventure poetry, what better a poem than "Beowulf?" He is a heroic fellow who is a Geat who leads his men to a distant land to fight a monster foe named Grendal. He takes on any adventure that he can and the tougher the adversary the better.