Maximum size: 30 cm

Depth: - 5 metres

They consist of only one cell with many nuclei,

making them one of the largest single-celled organisms in the world.

It forms extensive, large colonies.

Bonaire Caribbean

Maximum size: 12 cm

Depth: - 15 metres

It grows on rocks or coral fragments and sometimes entangled

with other green or red macroalgae and seagrass stalks

Bonaire Caribbean

Maximum size: 8 cm

Depth: 2 - 37 m

Dictyota ciliolata is a brown algae found in warm tropical waters almost worldwide

on the coasts,

which grow as epiphytes on other aquatic plants in shallow tide pools and in shore regions.

Algae serve as food for many marine animals and also contribute greatly to water purity.

Bangka island North Sulawesi

Maximum size: 20 - 30 cm

Depth: 0 - 40 m

A fairly common brown alga that crawls over surfaces in shallow

and sheltered habitats and can take hold on almost any solid substrate.

Light brown in colour, often with bright, light blue iridescence

Bonaire Caribbean

Maximum size: 25 cm

Depth: up to 1 - 5 m

Upright growth form, hanging or spreading.

The shape of the species-specific segments can be simple, lobed,

kidney-shaped, triangular, cylindrical, roundish or triangular.

Bonaire Caribbean

Maximum size: 7 - 20 cm 

Depth: 65 m

This red algae has the form of a bushy bush with a pink-orange,

pink to red colour structure during the reproductive period.

It is characterised by erect fronds consisting of a cylindrical central axis

with cylindrical branches and short branches that branch alternately and irregularly,

rarely lying on the same plane and becoming narrower towards the top

They are found on rocky soils.

Bonaire Caribbean

Maximum size: 2 - 20 cm

Depth: 0.5 - 30 m

It is attached to stones with an adhesive organ. 

The whitish-greyish-brown thallus widens into a fan-shaped lobe

with concentric white rings parallel to the upper edge,

which are caused by calcareous deposits.

Bonaire Caribbean

Maximum size: 5 - 10 cm

Depth: - 60 m

Peyssonnelia squamaria is dark red, brown-red to black-red.

It has flat, leaf-like thalli that are roundish to kidney-shaped.

The thallus is incised at the edge, giving it a lobed appearance.

On the surface it is somewhat radial and concentrically marked.

Peyssonnelia squamaria grows horizontally

and is attached to the substrate by rhizoids.

The red alga feels leathery on the surface,

which is an important feature for identification

.The underside of the thalli is completely or partially calcified.

Usually grows in shaded areas,

under rock overhangs and in grottos on hard substrates.

It occurs both near the surface and at depths of up to 60 meters.

Bangka island North Sulawesi