Teredo navalis survives the larval stage in relatively shallow ocean waters but prefers the protection of the hole that it bores into a wooden ship's hull as a larva. Teredo navalis is viable in a water temperature range of 11-20°C, but its reproductive maximum is 15°. Its water depth range is 0-27m. Its minimum salinity is 8%. Before the advent of wooden ships Teredo navalis would have been more reliant on driftwood. With the modern transition to steel-hulled ships we might see Teredo navalis return to this reliance. After burrowing into wood, Teredo navalis lines the holes with calcified walls (Kristensen 1979).
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