Also known as: テトラポッド
A concrete Wave Breaker, shaped like a huge caltrop or jack. The edges are typically rounded, but don't have to be. They're used in large numbers in Breakwaters, Seawalls, etc. to protect against beach erosion.
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Tetrapod
119 posts2 sourcesWiki updated 3/14/2026
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original
original · safebooru.org
original
original · safebooru.org
cheval grand (umamusume)
umamusume · by a4 (a4 eishi) · safebooru.org
original
original · safebooru.org
amatsukaze (kancolle)
comiket 106 · safebooru.org
tetrapod
by tetrapod · konachan.com
soryu asuka langley
neon genesis evangelion · by tetrapod · konachan.com
original
original · by tetrapod · konachan.com