This is a mug shaped like a pelican sitting on a lashed together set of three pier posts that are covered in barnacles.

From Munktiki:

"Dead Man’s Isle standard color edition Pelican Mug designed and sculpted by Thor. For this non-limited edition mug we went with a somewhat realistic coloration. Pelican holds about 32 oz and is 9 1/2 inches tall.

All profits go towards the Dead Man’s Isle bar build."

There was also a limited edition of this mug in Seafoam Green (250 pieces) that preceded this open edition.