Aquascope Facts
Sea oak

Picture of sea oak

Distribution in scandinavian waters
Maximum length: 2 m.
Appearance: From the stem there are two branches that branch out in opposite directions. The bladders are attached to small stalks that can be up to 3 cm long. The inside of the bladders are divided into 5 - 15 pea pod like chambers. The bladders help to hold the often light brown plant vertical.
Depth: 1-10 m.
Environment: Sea oak grows on cliffs and rocks, in both wave exposed and more protected areas.
Misc: Sea oak reproduces during the spring and summer. It is then the reproductive organs became visible on the lobes. Read more about reproduction of the closely related bladder wrack.
Classification: Sea oak is a member of the brown algae group.

Sea oak     Other names

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Bo Johannesson | Martin Larsvik | Lars-Ove Loo | Helena Samuelsson