by Marlowe HOOD Agence France-Presse PARIS, France (AFP) — Limpets — those coin-sized, suction-cup critters with conical caps — have had the experts fooled all along. For more than a century, scientists have assumed that their out-sized ability to clamp onto tide-pool rocks in defiance of bare-handed attempts to pry them off was due mostly to muscle power. Some South African limpets, one study showed, could withstand up to 100 kilos (220 pounds) of force. […]