1. Antonyms for Astutest include stupidest, dullest, slowest, foolishest, ignorantest, obtusest, shallowest, thickest, dumbest and densest

2. Thilafushi originally was a lagoon called "Thilafalhu" with a length of 7 km and a width of 200 metres at the shallowest regions.

3. The 2D array is configured into patches of elements which are processed by a microbeamformer and summed signals from a patch are coupled to a channel of an ultrasound beamformer At the shallowest depth the 2D array receives echoes from small patches in the center of the aperture.