Larva
Any early or immature form of an organism.

Ligia
Shore louse

Littorina
PeriWinkle

Latimeria
Coelacanth, fish thought to have been extinct.

Littorina
periwinkle, a Zone I indicator organism.

Linnaeus
The scientist who established the foundation of our modern
system of scientific naming in
the early 1700s.

Lichen
A symbiotic relationship between an alage and a fungus.
Creates a new entity.         

Lorica
The shell-like outer structure of the organisms of the group
tintinnids.

Littorina
Very common genus of gastropod often used as an indicator
organism to locate tidal zones.

Loligo
A very common genus of squid.

Ligia and Ligyda
Indicator organisms for Zone 1 in many parts of the world: an
Isopoda.

Lophophores
Hollow, ciliated tentacles found on phoronida, Brachiopida, and
Bryozoa.

Lateral line
A special sense organ which picks up and locates low
frequency vibrations such as a fish swimming; well developed
in most pelagic sharks.

Larus
Genus name for gulls.

Lipid
Organic fats and oils.