Community

Share your thoughts, experiences or questions and participate in discussions over our favorite topic : SCUBA diving!

Dive Log

by Phil on November 19, 2012

I think this is a great site!  I'm trying to add all of the dives for the past 30-35 years.  Unfortunately I cannot find my first log book covering years 1978-1981.  I began diving in 1971 but never began logging until 1978.

Read More...

Fish round up: Sea Urchin

by Ksso on April 09, 2011

Sea urchin are a common ornament of the reefs. They can be seen about everywhere, as you can see on the map below. Those small spiky balls look harmless, but beware, they actually can be deadly !They feed on algae and move very slowly. They are hunted by many predators including humans (yummy maki-sushis), sea otters, wolf eels, triggerfish...Wikipedia states:The spines, long and sharp in some species, protect the urchin from predators. The spines inflict a painful wound when they penetrate human skin, but are not dangerous. It is not clear if the spines are venomous (unlike the pedicellariae between the spines, which are venomous). ...

Read More...

Fish round up : Sea Cucumbers

by Ksso on March 27, 2011

Sea cucumbers are a common oddity in the ocean's sandy bottom. While they look like a dead dark sausage, they're actually live animals. They're even harvested for their skin and muscles to China. Alaskan sea cucumbers are also apparently more nutritionally interesting than their chinese counterparts.Sea cucumbers reproduce releasing sperm and ova in the sea - a subset of species fertilize their eggs internally. They also communicate one with another releasing hormons.Wikipedia precises that sea cucumbers have no true brain. A ring of neural tissue surrounds the oral cavity, and sends nerves to the tentacles and the pharynx. The animal is, however, quite capable of functioning and moving...

Read More...

Share your experiences, thoughts, or ask a question

WRITE A POST
What's up on Diveboard