Apologies in advance for the picture quality on a lot of my pictures; they were all made in a hurry on a sunny afternoon shortly before I moved into student digs. I've edited them as best I can, but they're far from perfect.
The gavokah are elemental spirits sustained almost purely by the energies of the Matoran Universe acting on protodermis-infused water, either through the elemental powers of one of the universe's inhabitants or, more rarely, through the direct influence of the Great Spirit Robot's systems.
On land, the gavokah are clumsy creatures and tend to form round, blobby bodies to minimise their total surface area and reduce evaporation. In icy climes they tend to take on a much greater variety of forms thanks to this not being a risk.
Underwater, they are extremely powerful, exposed as a floating net of protodermis that is near-invisible, they are able to influence the water around them and take on near limitless forms. Often employed as underwater guardians, they are well known for sinking ships or dragging those that would harm their masters or birthing waters to their doom.
They are most famous for being guardians of Korrothis, an island directly under Mata-Nui's heartlight home to the Council of the Elements. In Korrothis' Great Bay, the gavokah roam the submerged halls of the Water Palace serving as both stewards and servants of those lucky few who are invited as guests of the Ga-Nui.
Tolus, the Ga-Nui of Korrothis, animates a pool of liquid protodermis with the powers of the Elemental Weave.
This guy is a tablescrap I made after finally getting some feet in trans-blue! You can thank a sale in my city for that; they had loads of "Chi Mungus" sets going buy one get one free! :o
The body is made up of a "wheel" of standard length CCBS bones with the limbs and head attached assymetrically. The middle is just 2 mace parts with some 2x2x1 cylinder parts between them that's just held in place by the rest of the body wrapping around it.