Dweller in the Deep
Leviathan of the Silver Sea
The Dweller in the Deep is a gigantic sea Rahi of the Silver Sea around Metru Nui. Toa Nokama found the Ga-Metru Great Disk in its jaws.

The Dweller in the Deep is a huge aquatic RahiRahiThe Rahi were the biomechanical wildlife of the Matoran Universe, built largely by the Brotherhood of Makuta, ranging from background fauna to engineered war beasts. that lives at the bottom of the Silver Sea around Metru NuiMetru NuiThe city beneath Mata Nui functions as the Great Spirit's brain, housing the Matoran whose labor keeps the god alive.. Gigantic and sleek, it has a jaw that looks big enough to swallow the entire Great TempleGreat TempleThe Great Temple is a structure situated in Ga-Metru, Metru Nui, associated with the Ga-Matoran and the Bordakh. It formerly fell under the influence of Teridax, though it currently holds no such power.. (BIONICLE: Metru Nui, City of Legends)
Discovery#
During the Toa Metru's hunt for the Great Disks, NokamaNokamaNokama served as Toa Metru of Water, endured the Hordika mutation, and led Ga-Koro and later Ga-Metru as Turaga through three eras. searched the sea for the Ga-MetruGa-MetruGa-Metru is a district of Metru Nui, home to the Ga-Matoran and the Bordakh. disk and found it in the jaws of the Dweller in the Deep. (BIONICLE Adventures 2: Trial by Fire)
The creature chased her up to the surface. There Nokama tricked it into fighting several Vahki Bordakh. (BIONICLE Adventures 2: Trial by Fire)
Biology and behaviour#
The Dweller was made by the MakutaMakuta (Species)Shadowy Antidermis beings and the Brotherhood's elite, Makuta commanded darkness and shaped the Matoran Universe's fate., using viruses and liquid protodermis, as one of the Rahi of the Matoran Universe. (BIONICLE: Makuta's Guide to the Universe)
It is said to be the only creature that preys on TarakavaTarakavaHuge lizard-like Rahi with powerful forelegs, hunted in pairs across Mata Nui and Metru Nui.. (BIONICLE: Metru Nui, City of Legends)
Given the choice, though, it prefers the Great Temple squid. (BIONICLE: Encyclopedia Updated)
Powers and combat status#
The Dweller's weapon is its size. Even a Toa Metru didn't try to fight it head on: Nokama's answer was to lead it into the Vahki and let them deal with each other. (BIONICLE Adventures 2: Trial by Fire)
Subsequent record#
After its clash with the Vahki, the Dweller returned to its home beneath the sea. (BIONICLE: Metru Nui, City of Legends)
Ecological significance#
The Dweller sits at the top of Metru Nui's sea life, preying even on the Tarakava that other creatures leave alone. (BIONICLE: Metru Nui, City of Legends)
Frequently asked questions
- What was the Dweller in the Deep?
- A huge aquatic Rahi that lives at the bottom of the Silver Sea around Metru Nui. It is sleek and gigantic, with a jaw that looks large enough to swallow the whole Great Temple.
- Who encountered the Dweller in the Deep?
- Toa Metru Nokama, while searching the sea for the Ga-Metru Great Disk. She found the disk in the Dweller's jaws.
- How did Nokama escape the Dweller in the Deep?
- It chased her to the surface, where she tricked it into fighting several Vahki Bordakh. Afterwards it went back to its home beneath the sea.
- What did the Dweller in the Deep eat?
- It's said to be the only creature that preys on Tarakava, though its favourite food is the Great Temple squid.
- Is the Dweller in the Deep the same as the Dark Hunter Dweller?
- No. Dweller is an unrelated Dark Hunter spy who hid in the Archives of Metru Nui.
Sources
- BookBIONICLE Adventures 2: Trial by Fire, Greg Farshtey, Scholastic, 2004
- BookBIONICLE: Metru Nui, City of Legends, Greg Farshtey, Scholastic, 2004
- BookBIONICLE: Encyclopedia Updated, Greg Farshtey, Scholastic, 2007
- BookBIONICLE: Makuta's Guide to the Universe, Greg Farshtey, 2008 (Papercutz US edition 2010)
Spotted a factual error or a primary source we missed? Email a correction. Every flagged claim gets reviewed.
Followed from this entry

Tarakava
Huge lizard-like Rahi with powerful forelegs, hunted in pairs across Mata Nui and Metru Nui.

Rahi
The Rahi were the biomechanical wildlife of the Matoran Universe, built largely by the Brotherhood of Makuta, ranging from background fauna to engineered war beasts.

Nokama
Nokama served as Toa Metru of Water, endured the Hordika mutation, and led Ga-Koro and later Ga-Metru as Turaga through three eras.

Metru Nui
The city beneath Mata Nui functions as the Great Spirit's brain, housing the Matoran whose labor keeps the god alive.

Ga-Metru
Ga-Metru is a district of Metru Nui, home to the Ga-Matoran and the Bordakh.

Great Temple
The Great Temple is a structure situated in Ga-Metru, Metru Nui, associated with the Ga-Matoran and the Bordakh. It formerly fell under the influence of Teridax, though it currently holds no such power.
Mentioned in3 entries
Great Temple Squid
A massive predatory Rahi of the deep channels beneath Metru Nui, known for twelve beak-tipped arms and a crushing central maw.
Legends of Metru Nui
The chronicle of how Toa Mangai Lhikan passed his power to six Matoran, how Metru Nui fell to Teridax, and how Toa Vakama forged the Kanohi Vahi.
The Great Disks: six Kanoka of level nine
The Great Disks were six Kanoka of Metru Nui, each at the maximum power level of nine, one hidden in every district. The Toa Metru recovered all six.
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