A goby and a snapping shrimp sharing one burrow. The shrimp digs and maintains it; the goby watches for danger. Neither does well without the other, and it is the clearest partnership a diver can watch on a soft bottom.
The shrimp is nearly blind and keeps one antenna on the goby at all times. A flick of the goby's tail sends both into the hole. Watching a burrow for a minute from a distance shows the whole arrangement: the shrimp comes out pushing a load of sand, dumps it, and reverses back in.
The photograph everybody wants is both animals out of the hole together, and it is a matter of settling on the bottom well back and waiting rather than approaching. They come back out within a minute or two if nothing moves.
Identification is on the goby's fin markings and, in several species, on which shrimp it is with. Several gobies pair with more than one shrimp species and several shrimps with more than one goby, so the pairing narrows the list without settling it.
Every one has a page. They are shown as a list rather than as pictures because nothing has been photographed or logged for them yet, and a species with nothing behind it should not sit in front of one that has.
How many of the 17 carry a record at each destination. A species usually carries several, so these do not add up to 17.
All 1316 species in one index, with filters for destination, rarity and hazard.
