Crane vessels are specialised ships designed for lifting heavy loads, often used in salvage or offshore construction.

The world’s largest crane vessel is the Semi-Submersible Crane Vessel (SSCV) Thaif that can lift over 14 million kilograms and installed the main spar of the Erasmus bridge and decommissioned Brent Spar.

Artist Nathan Sawaya has created a model heart from candy hearts.

Carnegie Mellon university’s National Robotics Engineering Centre (NREC) in Pennsylvania has been awarded a $14.4 million contract by the US Army to build a robotic unmanned tank.

Some of the money will go towards improving NREC’s Crusher, a 6,000kg unmanned ground vehicle shown below.

Mobula Rays (Myliobatidae mobula) in the Gulf of California (a.k.a. the Sea of Cortez) have been photographed “jumping” over two metres into the air.