Scientific name: Cephea cephea
Size: From 4 to 6 inches
Color: blue and translucent
Distinguishing feature: Big jellyfish. A blue disk surmounted by an organ with about 30 swellings. Under the disc, mouth-shaped arms like cauliflowers with very fine firmaments.
Where did we see it: Egypt
Scientific name: Cephea cephea
Size: From 4 to 6 inches
Color: blue and translucent
Distinguishing feature: Big jellyfish. A blue disk surmounted by an organ with about 30 swellings. Under the disc, mouth-shaped arms like cauliflowers with very fine firmaments.
Where did we see it: Egypt
This jellyfish is different from others because of its swellings above the disc.
It is present throughout the Indo-Pacific, from the Red Sea to Polynesia.
Some sharks can stay motionless on the sand (white tips reef sharks, nurse sharks, etc.).
These sharks don't have to swim to bring oxygen to their gills like other sharks (grey, hammerheads tc.)
Parrotfish create a protective envelope around them when they are sleeping.
So, don't put the light on them during night dive to don't to wake them up and break this envelope.
We can hear the bull shark is very dangerous because of attacks near La Réunion island.
However, tens of them are living at 600 feet from the famous beach of Playa Del Carmen in Mexico. And there are no attacks.