藻

to struggle

seaweed

algae

seaweeds

Closterium (genus of algae)

Japan Seaweed Association

coccolithophorid

Japanese Society of Phycology

star duckweed (Lemna trisulca)

Brazilian elodea (Egeria densa)

literary talent

seaweed bed

Zygnematophyceae (class of green algae)

Japanese Society of Diatomology

algology

to be drowned at sea

seaweed

dwarf eelgrass (Nanozostera japonica)

watery grave

to be drowned at sea

charophyte

common hornwort (Ceratophyllum demersum)

Ochromonas vischeri (species of golden alga)

spiny lebbeid (Lebbeus groenlandicus)

Eurasian water milfoil (Myriophyllum spicatum)

Chlorophyta

fresh-water algae

chlorophyte

Notonecta triguttata (species of backswimmer)

Sargassum fulvellum (species of edible brown alga)

stonewort (esp. Braun's stonewort, Chara braunii)

stoneworts

floating watermoss (Salvinia natans)

basket star (any brittlestar of family Euryalina)

seaweed

calcareous algae

devil weed (Sargassum horneri)

microalgae

washed-up seaweed

hydrilla (species of aquatic plant, Hydrilla verticillata)

Chinese mitten crab (Eriocheir sinensis)

nostoc

whorl-leaf water milfoil (Myriophyllum verticillatum)

Chaetomorpha algae

dinoflagellate of genus Ceratium

struggle

seaweed used in making salt

water plant

haptophyte

glaucophyte

cyanophyte

green algae

red algae

Glaucophyceae (class of glaucophytes)

Eurasian water milfoil (Myriophyllum spicatum)

algal fungi

scraps of seaweed

eelgrass (Zostera marina)

diatomaceous earth

watermelon snow

seaweed salt

spiny water nymph (Najas marina)

poetic talent

florid expression

phytoflagellates

green algae

Oscillatoria (cyanobacteria)

red algae

small pondweed (Potamogeton pusillus)

Phyllospadix iwatensis (species of seagrass)

brown algae

dinoflagellates

zooxanthella

dinoflagellate

Japanese mitten crab (Eriocheir japonica)

waterweed (any aquatic plant of genus Elodea, esp. common waterweed, Elodea canadensis)

cryptophyte

brown algae

blue-green algae

marimo (variety of algae, Cladophora aegagropila)

waterwheel plant (Aldrovanda vesiculosa)

diatom

bladderwort