Greek archaeologists have discovered the remains of a massive Roman vessel believed to be the largest classical shipwreck found in the eastern Mediterranean. Believed to have sunk some 2,000 years ago, the 35-metre vessel was discovered at a depth of around 60m during a survey off Kefalonia, one of the Ionian islands off Greece’s west coast. The site is situated 1.5 miles from the entrance to the harbour of Fiscardo, the island's only village to not be destroyed during World War II.

Whether or not you have watched (or agree with) the movies Free Willy or Blackfish, the predicament of captive cetaceans is one that can spark off a heated debate from both sides of the fence.

Nonetheless, such movies and increased awareness have led to public calls for attractions and venues that keep wild animals captive to release them.

Marine-animal attractions like SeaWorld are particularly under fire due to their animal shows featuring captive cetaceans trained to perform for public entertainment.

In a study involving 378 orcas (or killer whales), researchers observed the first non-human example of the "grandmother effect" in a menopausal species.

This is when post-reproductive grandmothers (in this case, orcas) assist other members of the species with their offspring, thereby improving the young ones’ chances of survival. It was found that these post-reproductive orcas had the largest beneficial impact on their grandoffspring’s survival chances.