Behavioural Complexity of Sharks

Illustration of two shark companions travelling together that encounter the researcher. Image source: Ila France Porcher.

Recent scientific efforts have begun to unravel the complexities of shark behaviour, challenging age-old perceptions, and revealing a world of intelligence and sophistication hidden beneath the waves. Ila France Porcher reports.

Sawfish
Sawfish/Georgia Aquarium CC BY-SA 3.0

Mysterious Sawfish Strandings Baffle Scientists in the Florida Keys

Sawfish, recognized for their distinctive long, narrow, flattened rostrum lined with teeth resembling a saw, are among the largest fish species. Often referred to as the “living fossils” of the ocean, they have long been shrouded in mystery due to their elusive nature and unique appearance. 

Equalising Ears: Eustachian Tube Balloon Dilation

Diagram showing how the balloon is inserted and expanded inside the Eustachian tube. Photo: @ Spiggle & Theis Medizintechnik / CC BY 4.0 DEED

It can be devastating to your diving career if you are unable to equalise or have a lot of trouble doing so. The underlying cause may be a narrow Eustachian tube, which connects the middle ear to the pharynx. Fortunately, this can be treated. Peter Symes reports.