The largest animal currently alive is the blue whale. The maximum recorded weight was 190 tonnes for a specimen … See more

The blue whale is the largest mammal of all time, with the largest known specimen being 33.6 m (110.2 ft) long and the largest weighted specimen being 190 tonnes. The extinct whale species Perucetus colossus was shorte… See more

The largest tunicate is Synoicum pulmonaria, found at depths of 20 and 40 metres (66 and 131 ft), and are up to 14 centimetres (6 in) in diameter. It is also present in the northwestern Atlantic Ocean, around the coasts of G… See more

The largest species of echinoderm in terms of bulk is probably the starfish species Thromidia gigas, of the class Asteroidea, which reaches a weight of over 6 kg (13 lb), but it might be beaten by some giant sea cucumbers … See more

• Largest prehistoric animals
• Megafauna
• Largest organisms See more