That’s probably why they dismissed it —
Lybrand gave no explanation as to what the 8 April pings were.
But archaeologists have previously surmised that the signals may have come from satellite tracking devices tagged to marine animals like sharks and turtles.
https://uk.news.yahoo.com/malaysia-airlines-plane-mh370-pings-were-not-black-151930519.html#SsfCk25
So then all those tagged turtles, sharks, whales swimming around down there are interfering with black box pings —