Can Shamans tank

they used to tank things. Mainly low level instances such as Zul'Farrak, Deadmines, Razorfen Kraul. They were also used as 'offtanks' or OTs for started raids. A shaman was NEVER used for hardcore endgame raids. (They used to tank through the Enhancement talent), today some Shaman with heirloom gear, stacked stamina MIGHT be able to tank somethings, but in the higher level instances in outlands+ deffinatly not.