Barry Docks by Friar's point. It had been a port in Medieval times. The island was about long and wide, with a height of above mean sea level. The mainland slopes up to the north, so the sound was well sheltered from the wind. No rivers or streams ran into the sound. The Bristol Channel is known for the range of its tides. During normal spring tides there is a range in water level of , and during normal neap tides a range of but tides can peak at around in which case sea water flows into the dock over the top
Threats to sea turtles Fisheries often use large-scale nets and hook systems that are indiscriminate and catch whatever comes along, be it sea turtle, dolphin, or even shark. What is known as “bycatch” is a large contributor to sea turtle deaths, as seen in Baja California. Longline, trawl, and gillnet fishing are three types of fishing with the most sea turtle accidents. Deaths occur often because of drowning, where the sea turtle was ensnared and could not come up for air. Another dangerous aspect of fishing that is common is when sea turtles inadvertently swallow sharp hooks, which can get stuck within the soft