The Crabeater Seal as a fine, dog-like face and a relatively slim, lithe body, with adults reaching 2-2.5m. Despite its name, the Crabeater Seal feeds mainly of krill. Its close-fitting, multi-cusped teeth are thought to have evolved precisely for sieving the krill. It can dive to around 600 metres and for periods of around 25 minutes, though its dives are generally though to be much shallower and shorter than this, and tied to the dermal activity of krill..

Issued as Tuvalu legal tender, the uncirculated aluminium bronze coin is housed in a beautifully designed card with a circular window revealing the coin's reverse and obverse designs.

The reverse of the coin features a coloured Crabeater Seal with stylised water in  the background. The design includes the inscription 'CRABEATER SEAL' and The Peth Mint's 'P' Mintmark.

The Ian Rank-Broadley effigy of Her Majesty Queen Elizabeth II, the 2018 year-date and the monetary denomination are shown on the coin's  obverse.