lower1. 1  to cause to descend; let or put down: to lower a flag. 2  to make lower in height or level: to lower the water in a canal. 3  to reduce in amount, price, degree, force, etc. 4  to make less loud: Please lower your voice.
Biggest Whale-Basilosaurus (60 Tons). Basilosaurus (Nobu Tamura). Unlike the other mammals on this list, Basilosaurus can't lay claim to being the largest-ever of its breed--that honor belongs to the still-extant Blue Whale, which can grow to as much as 200 tons.
Bivalve molluscs are the longest living animals and invertebrate. Tu'i Malila, a Radiated Tortoise, died at an age of 188 years in May 1965, the oldest documented reptile, tâ¦hough an Adalbra Giant Tortoise called Adwaitya, may possible have lived for around 250 years.