Durvillaea antarctica, commonly known as
cochayuyo, is a large, robust bull kelp species and the dominant seaweed in southern New Zealand and Chile.
D. antarctica has a circumpolar distribution between the latitudes of 29°S (in Chile) and 55°S (on Macquarie Island). It is found on exposed shores, especially in the northern parts of its range, and attaches itself with a strong holdfast.
D. antarctica, an alga, does not have air bladders, but floats due to a...
(Wikipedia)