Underwater Galleries Sunken Branch; molded from an actual  "Y" shaped tree branch, bark and all, is particularly good for exploration in your tank as it has SEVEN opening!
Every branch ending is open and there are three openings on the "front" and even one in the "back" :
* size is 10" long x 5.5" wide x 2" deep 
* made of earth-friendly ceramic
* largest openings 1.75 " and 2"
*upc# 738008060435